Easy and Delicious Reuben Casserole Recipe

Experience all the beloved flavors of a classic Reuben sandwich transformed into an effortlessly delicious and incredibly satisfying **Reuben Casserole recipe**. This hearty one-dish meal layers savory corned beef, tangy sauerkraut, homemade Thousand Island dressing, and creamy Swiss cheese between golden cubes of rye bread, baked until bubbly, crisp, and perfectly melted. It’s the ultimate comfort food, ideal for family dinners, gatherings, or as a flavorful way to utilize leftover corned beef. This casserole simplifies the traditional Reuben experience, allowing you to feed a crowd with ease while delivering every bit of that iconic taste.

A perfectly baked slice of Reuben casserole, showcasing layers of rye bread, corned beef, sauerkraut, and melted Swiss cheese.

The creation of this exceptional Reuben casserole originated from a personal chef client’s desire to enjoy the rich, complex flavors of their favorite Reuben sandwich in a convenient, easy-to-reheat format. The solution: a robust casserole that captures all the elements of a classic Reuben – tender corned beef, the distinct tartness of sauerkraut, a luscious homemade Thousand Island dressing, and a generous topping of melted Swiss cheese, all nestled amongst cubes of toasted rye bread. This ingenious twist not only satisfies the craving for a Reuben but also serves as a fantastic meal prep option, staying wonderfully delicious in the refrigerator for up to three days, making weeknight dinners a breeze.

Unlike individual sandwiches that require assembly at mealtime, this Reuben bake consolidates all the beloved components into a single 9×13 inch baking dish. Each forkful delivers a harmonious blend of textures and tastes: the slight crispness of the toasted rye, the salty, tender notes of corned beef, the bright acidity of sauerkraut, the creamy sweetness of the dressing, and the irresistible melt of Swiss cheese. It’s a perfect culinary innovation, especially if you find yourself with leftover corned beef from holidays like St. Patrick’s Day, offering a delightful second life to your ingredients.

A whole corned beef casserole with a single serving portion carefully cut out and ready to be served.

Why You’ll Absolutely Love This Reuben Casserole

  • Effortless Entertaining for Groups: Forget the fuss of assembling individual sandwiches. This comforting casserole is the ultimate solution when you want to serve the iconic flavors of a Reuben to a group. Simply prepare one dish, bake it, and effortlessly serve a crowd-pleasing meal that delivers all the classic taste without any of the individual sandwich-making hassle. It’s a fantastic choice for parties, family gatherings, or casual get-togethers.
  • Incredibly Easy to Prepare: Simplicity is key with this recipe. This one-dish wonder requires minimal effort, making it perfect for busy weeknights or when you crave a hearty, flavorful meal without spending hours in the kitchen. All the ingredients are layered strategically in a single baking dish and then baked to perfection in the oven. It’s truly a “set it and forget it” kind of dish once assembled.
  • A Meal Prep Marvel: Planning ahead has never been easier! This Reuben casserole is an excellent candidate for meal preppers. You can assemble the entire dish up to 24 hours in advance, cover it tightly, and refrigerate. When you’re ready to eat, simply pop it in the oven for a freshly baked, warm, and satisfying meal. This flexibility makes it an invaluable addition to your weekly cooking rotation.
  • Clever Use for Leftover Corned Beef: If you’ve just celebrated St. Patrick’s Day and have an abundance of tender, cooked corned beef, this casserole offers the perfect, most delicious way to transform those leftovers into a brand-new culinary delight. It ensures no delicious meat goes to waste and gives it a starring role in a whole new context.
  • All the Classic Flavors in Every Bite: This casserole truly captures the essence of a Reuben sandwich. From the savory depth of corned beef to the tangy bite of sauerkraut, the creamy sweetness of Thousand Island dressing, and the gooey richness of Swiss cheese, every single component shines through, delivering that unmistakable Reuben experience in a comforting baked format.

Essential Ingredients for Your Reuben Casserole

To create this mouthwatering corned beef casserole, gather the following high-quality ingredients. Each plays a crucial role in developing the rich, layered flavors that make this dish so special.
For precise quantities of each ingredient, please refer to the detailed recipe card located further down the page.

A visual display of all the ingredients needed for Reuben casserole: cooked corned beef, Swiss cheese, drained sauerkraut, cubed rye bread, ketchup, mayonnaise, and sweet pickle relish laid out on a kitchen counter.
  • Salted Butter: This is essential for toasting the rye bread cubes, giving them a rich, golden crispness that adds a delightful textural contrast to the soft layers of the casserole. A little extra is also used to grease your baking dish, ensuring a non-stick finish.
  • Marble Rye Bread: The cornerstone of any Reuben, rye bread provides that signature slightly tangy flavor. Cutting it into 1-inch cubes ensures it absorbs moisture without becoming soggy, contributing to a pleasant texture. While marble rye is aesthetically pleasing, dark rye, light rye, or pumpernickel varieties are also excellent choices and will work beautifully.
  • Cooked Corned Beef: The star protein of the dish. For the most tender and flavorful results, I highly recommend using homemade corned beef, perhaps from a recipe like my Instant Pot Corned Beef and Cabbage recipe (just omit the vegetables for this casserole). Alternatively, high-quality leftover corned beef or thinly sliced deli corned beef from your local grocery store’s deli counter are perfectly acceptable and convenient options. Shredding it ensures even distribution and makes each bite perfectly tender.
  • Sauerkraut: This fermented cabbage brings the essential tangy, savory, and slightly sour notes characteristic of a Reuben. It’s crucial to drain it very well and even squeeze out excess liquid to prevent your casserole from becoming watery and soggy.
  • Mayonnaise: The creamy base for our homemade Thousand Island dressing, providing richness and a smooth texture.
  • Ketchup: Adds a touch of sweetness, color, and a subtle tomato tang to the Thousand Island dressing, balancing the other flavors.
  • Sweet Pickle Relish: This is the secret ingredient that gives the Thousand Island dressing its signature sweet and tangy crunch. If you don’t have relish, finely chopped sweet gherkins or bread and butter pickles can be used as a delicious substitute.
  • Swiss Cheese: Known for its distinct nutty and mild flavor, and its excellent melting properties, Swiss cheese creates a gooey, golden topping that binds all the layers together. For superior flavor and melt, consider shredding a block of Gruyere or Fontina cheese as alternatives; they offer similar melting qualities and rich tastes.
  • Fresh Parsley: An optional but highly recommended garnish. Chopped fresh parsley adds a vibrant pop of color and a fresh, herbaceous note that brightens the entire dish, offering a lovely contrast to the rich flavors.

Crafting Your Delicious Reuben Casserole: Step-by-Step

The beauty of this Reuben casserole lies in its straightforward assembly. By layering all the classic ingredients in a single baking dish, you create an ultimate comfort food meal that is incredibly easy to prepare yet bursting with complex flavors. You’ll love how quickly and simply this recipe comes together.

Layering shredded corned beef into the Reuben casserole dish.
Spreading sauerkraut evenly over the corned beef layer in the casserole.

Step 1: Prepare the Bread Base. Begin by preheating your oven to 400 degrees Fahrenheit (200 degrees Celsius). Lightly grease a 9×13 inch baking dish with butter to prevent sticking. In a large mixing bowl, combine your cubed rye bread with the melted salted butter, tossing gently until each cube is evenly coated. This step is crucial for achieving a delightful crispy texture in your finished casserole. Once coated, spread half of these buttered bread cubes evenly across the bottom of your prepared baking dish, forming a sturdy and flavorful base.

Step 2: Add the Savory Layers. Next, take your shredded cooked corned beef and distribute it in an even layer over the bread cubes. Ensure the beef covers the entire surface for a consistent flavor distribution. Following the corned beef, spread the well-drained sauerkraut across the layer of meat. Remember to squeeze out as much excess liquid from the sauerkraut as possible to avoid a soggy casserole.

Step 3: Whip Up the Homemade Dressing. In a small bowl, prepare your irresistible homemade Thousand Island dressing. Simply combine the mayonnaise, ketchup, and sweet pickle relish. Stir these ingredients thoroughly until they are well blended and create a smooth, creamy sauce. This dressing adds a vital sweet and tangy element to the casserole. Once mixed, spread this delicious dressing evenly over the sauerkraut layer.

Sprinkling shredded Swiss cheese over the dressing layer in the casserole.
The Reuben casserole assembled and ready for baking, topped with the final layer of Swiss cheese.

Step 4: Introduce the First Cheese Layer. Now, sprinkle half of your shredded Swiss cheese evenly over the creamy Thousand Island dressing. This initial cheese layer will melt beautifully into the dressing and sauerkraut, adding a rich, nutty flavor throughout the casserole.

Step 5: Complete the Layers. Distribute the remaining buttered rye bread cubes over the first cheese layer. This creates another textural element and ensures bread is present throughout the dish. Finally, generously sprinkle the remaining Swiss cheese over the top of the casserole. This top layer of cheese will melt into a golden, bubbly crust, making the casserole incredibly appealing.

Step 6: Bake to Golden Perfection. Place your assembled Reuben casserole in the preheated oven and bake for approximately 20 to 25 minutes. The casserole is ready when it’s heated through, bubbling around the edges, and the top layer of Swiss cheese is beautifully melted and lightly golden brown. If you desire a deeper golden crust, you can briefly place it under the broiler for a minute or two, watching carefully to prevent burning. Remove the casserole from the oven, let it rest for a few minutes, then garnish with fresh chopped parsley before slicing and serving.

A baked Reuben casserole, with one slice removed to show the distinct layers of ingredients.

Expert Tips for the Best Reuben Casserole

Freshly Shredded Swiss Cheese Makes a Difference: While pre-shredded cheese is convenient, taking a few extra minutes to shred your own Swiss cheese (either by hand with a box grater or using a food processor) will significantly enhance the flavor and melt of your casserole. Freshly shredded cheese lacks the anti-caking agents found in pre-packaged varieties, resulting in a much creamier, smoother melt and a fresher taste. You’ll notice the difference immediately.

Mastering the Thousand Island Dressing: Crafting your own Thousand Island dressing is incredibly simple and yields a far more vibrant flavor than store-bought versions. With just a few pantry staples like mayonnaise, ketchup, and sweet pickle relish, you can whip up a batch in under a minute. However, if time is truly of the essence, a high-quality store-bought Thousand Island or Russian dressing can serve as an acceptable alternative, offering similar flavor profiles.

Drain That Sauerkraut Thoroughly: To prevent a soggy casserole bottom, vigorously drain and even squeeze your sauerkraut. Excess liquid from the sauerkraut is the primary culprit behind a watery or mushy texture. Using a colander and then pressing it with a spoon, or even wrapping it in a clean kitchen towel to squeeze out moisture, will make a significant difference to the final crispness and integrity of your dish.

Choosing Your Rye Bread: While marble rye offers a beautiful visual appeal, don’t hesitate to experiment with other rye bread varieties. Dark rye provides a more robust, earthy flavor, while light rye offers a milder taste. Pumpernickel bread can also be a fantastic choice for those who enjoy a deeper, slightly sweeter profile. Whichever you choose, ensure it’s fresh and sturdy enough to hold its shape when cubed and tossed with butter.

Don’t Overbake: Keep an eye on the casserole during the last few minutes of baking. You want the cheese to be perfectly melted and bubbly, and the bread cubes lightly golden, but you don’t want to dry out the corned beef or sauerkraut. If the top is browning too quickly, you can loosely tent it with aluminum foil.

Frequently Asked Questions About Reuben Casserole

How do you prevent a Reuben casserole from becoming soggy?

The key to a perfectly textured Reuben casserole is properly draining the sauerkraut. Sauerkraut is typically stored in liquid, and this excess moisture can quickly lead to a soggy dish. To combat this, place your sauerkraut in a fine-mesh sieve or colander and press out as much liquid as possible. For best results, you can even wrap it in a clean kitchen towel and firmly squeeze to extract additional moisture before adding it to your casserole. This step significantly contributes to a more appealing texture.

How should I store leftover Reuben casserole?

Once your Reuben casserole has completely cooled to room temperature, you can store any leftovers. For optimal freshness, cover the baking dish tightly with plastic wrap or aluminum foil. It will remain delicious in the refrigerator for up to 3 days. Alternatively, you can transfer individual portions of the cooled casserole into airtight containers. This ensures the flavors stay vibrant and the textures remain appealing for future meals.

Can I freeze this Reuben casserole?

Absolutely, this casserole freezes beautifully! To freeze, allow the baked casserole to cool completely. Then, transfer it to a freezer-safe airtight container. For best quality, consume within 1 month. When you’re ready to enjoy it, thaw the casserole in the refrigerator overnight before reheating it. This makes it an excellent option for future make-ahead meals.

What’s the best way to reheat Reuben casserole?

Reheating is simple and efficient. For a quick reheat, individual portions can be warmed in the microwave. Use 60% power for 1 to 2 minutes, or until the casserole is thoroughly hot and the cheese is deliciously melty. If reheating a larger portion or the entire dish, preheat your oven to 350 degrees Fahrenheit (175 degrees Celsius) and warm the casserole for 20-30 minutes, or until heated through and the cheese is gooey once more. Covering it loosely with foil for part of the cooking time can help prevent drying out.

Can I substitute other cheeses for Swiss?

While Swiss cheese is traditional for a Reuben, you can certainly experiment with other melty cheeses if you prefer. Gruyere cheese is an excellent choice, offering a richer, nuttier flavor that complements the corned beef beautifully. Fontina cheese is another fantastic alternative, known for its smooth melt and mild, creamy taste. For a sharper profile, a blend of Swiss and a good quality white cheddar could also be delicious.

What kind of corned beef is best for this recipe?

For the most authentic and tender results, using freshly cooked, shredded corned beef is ideal. If you’ve cooked a corned beef brisket, shredding it yourself ensures optimal texture and flavor absorption. However, thinly sliced deli-style corned beef works perfectly well as a convenient substitute. Just be sure to dice or shred it into manageable pieces for even distribution throughout the casserole.

A beautifully layered Irish Reuben casserole, showcasing all its delicious components before serving.

Perfect Pairings: What to Serve with Reuben Casserole

Just like its sandwich counterpart, this Reuben casserole pairs wonderfully with classic deli-style sides that complement its rich flavors. Here are some fantastic suggestions to complete your meal:

  • Crispy Oven Fries: For a healthier yet equally satisfying option, these Crispy Oven Fries are a revelation. They achieve a perfectly golden and crunchy texture in the oven, making them taste just as indulgent as their fried counterparts without the extra oil. Their salty crispness is a delightful contrast to the hearty casserole.
  • Homestyle Red Potato Salad: A timeless classic, my Homestyle Red Potato Salad with Dill Pickles offers a cool, creamy, and tangy balance to the warm, savory casserole. The pickles in the salad echo the tang of the sauerkraut, creating a harmonious flavor profile.
  • Roasted Carrot and Parsnip Fries: For a slightly different twist on “fries,” these fun Roasted Carrot and Parsnip Fries provide a sweet and earthy counterpoint. Roasting brings out their natural sugars, making them a delicious and colorful accompaniment that’s also rich in nutrients.
  • Simple Green Salad: A fresh, crisp green salad with a light vinaigrette can cut through the richness of the casserole, offering a refreshing element. Consider adding some thinly sliced cucumbers or cherry tomatoes for extra crunch and color.
  • Creamy Coleslaw: Another deli staple, a good coleslaw brings a refreshing crunch and a creamy, slightly sweet or tangy flavor that balances the bold profile of the Reuben.

More Irresistible Comfort Food Recipes

If you have a love for warm, hearty, and soul-satisfying dishes, then these additional comfort food recipes are sure to become new family favorites:

  • Nothing evokes the feeling of home like classic, delicious cooking. My Mom’s Meatloaf is a treasured recipe, celebrated for its tender texture and rich, savory glaze – truly the best!
  • Indulge in this creamy Chicken and Kale Casserole, featuring a luxurious parmesan sauce that perfectly binds tender chicken and healthy kale into a delightful baked meal.
  • When a craving for Italian comfort food strikes, my Spinach and Sausage Lasagna stands out. Layered with a flavorful combination of three cheeses, savory sausage, and fresh spinach, it’s one of my all-time favorite pasta dishes.
  • Experience the fabulous, deep flavors of classic French onion soup reimagined in this hearty French Onion Chicken Bake. It’s an elegant yet comforting dish that’s surprisingly easy to make.

Just One More Thing…

We love seeing your culinary creations! If you try my delicious Reuben Casserole recipe, please consider giving it a rating and leaving a comment below to share your experience. And don’t forget to snap a photo and tag @amycaseycooks on Instagram. Your feedback and shares mean the world! Thank you for cooking with us.

A close-up of a layered casserole featuring corned beef, rye bread cubes, sauerkraut, and a creamy dressing, topped with melted cheese.

Reuben Casserole Recipe Card

Reuben Casserole

All the iconic flavors of a Reuben sandwich, expertly combined into an easy-to-make and incredibly satisfying baked casserole.
5 from 4 votes

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Prep Time:

10
Cook Time:

20
Total Time:

30
Servings:

8 servings
Calories:

406kcal
Author:
Amy Casey

Ingredients

  • 4 tablespoons salted butter melted, plus more for greasing baking dish
  • 8 slices of marble rye bread cut in 1 inch cubes
  • 1 pound of cooked corned beef shredded
  • 2 cups of sauerkraut drained
  • ¾ cup mayonnaise
  • ¼ cup ketchup
  • 2 tablespoons sweet pickle relish
  • 2 cups shredded Swiss cheese
  • fresh parsley chopped, for garnish

Instructions

  1. Preheat oven to 400 degrees F (200 degrees C). Grease a 9 x 13 inch baking dish with butter and set aside.
  2. Place the rye bread cubes in a large bowl. Add the 4 tablespoons of melted butter and toss gently to coat all the cubes evenly.
  3. Spread half of the buttered bread cubes evenly over the bottom of the prepared baking dish.
  4. Evenly distribute the shredded cooked corned beef on top of the bread cubes, covering the entire layer.
  5. Spread the well-drained sauerkraut evenly on top of the corned beef layer. Ensure you’ve squeezed out as much excess liquid as possible.
  6. In a small bowl, prepare the Thousand Island dressing. Combine the mayonnaise, ketchup, and sweet pickle relish. Stir thoroughly until well combined. Spread this dressing evenly over the sauerkraut.
  7. Sprinkle one half of the shredded Swiss cheese evenly over the dressing layer.
  8. Evenly distribute the remaining buttered bread cubes over the Swiss cheese layer.
  9. Generously sprinkle the remainder of the Swiss cheese over the top of the bread cubes, creating the final cheesy crust.
  10. Bake in the preheated oven for 20 to 25 minutes, or until the casserole is hot and bubbling, and the cheese is beautifully melted and lightly golden.
  11. Remove the casserole from the oven. Let it rest for a few minutes before sprinkling with fresh chopped parsley. Cut into squares and serve immediately while warm.

Recipe Notes & Tips

  • For the most authentic and tender results, using freshly cooked and shredded corned beef is highly recommended. However, thinly sliced deli corned beef can certainly be used as a convenient and suitable substitute.
  • Homemade Thousand Island dressing offers a superior flavor profile compared to store-bought versions. It requires only a few simple pantry ingredients (mayonnaise, ketchup, sweet pickle relish) and can be whipped up in under a minute. If you’re short on time, a good quality store-bought creamy dressing or Russian dressing can be used as an alternative.
  • Always opt to shred your Swiss cheese fresh, either by hand or with a food processor. This yields a much fresher taste and ensures a beautifully smooth, melty consistency without the waxy texture that can sometimes come with pre-shredded varieties.
  • To avoid a soggy casserole, remember to thoroughly drain and even squeeze out excess liquid from the sauerkraut. This crucial step preserves the integrity and texture of your dish.
  • Any leftovers from this delicious casserole reheat wonderfully. For individual servings, simply use 60% power in the microwave for 1 to 2 minutes, or until it’s hot throughout and the cheese is perfectly melty once more.

Nutrition Information


Serving: 1/8 of recipe

|

Calories: 406kcal

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Carbohydrates: 21.1g

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Protein: 17.3g

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Fat: 28.5g

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Saturated Fat: 12.7g

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Cholesterol: 81mg

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Sodium: 1231mg

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Fiber: 2.3g

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Sugar: 6g

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