Name: Reuben Casserole Recipe
Prep time: 15 min
Cook time: 25 min
Total time: 40 min
Yield: 8
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)

All the goodness of a reuben sandwich, but in an easy to make and delicious Reuben Casserole recipe. Layer rye bread cubes, corned beef, tangy sauerkraut, homemade thousand island dressing, and Swiss cheese in a baking dish and bake until hot, crispy, and melty. The whole family will love this recipe.

"This was amazing! I had no leftovers because everyone ate so much! Thank you! 5 stars!" ~Lisa

Recipe review

A quick look at this recipe

Recipe Name: Reuben Casserole
Ready In: 15 minutes prep, 25 minutes cook time, 40 minutes total time
Serves: 8
Calories: 407 per serving
Main Ingredients: Cooked corned beef, rye bread, sauerkraut, Swiss cheese, ketchup, mayonnaise, sweet pickle relish
Difficulty: Easy

This recipe for reuben casserole was a creation for a reuben sandwich loving personal chef client family of mine. The family loves casseroles especially this chicken and kale casserole). They wanted all the flavors of a reuben sandwich, but in an easy to reheat version. And as a bonus, the hearty casserole stays delicious in the refrigerator for up to 3 days.

Just like a classic reuben sandwich, the casserole has corned beef, sauerkraut, homemade thousand island dressing and Swiss cheese are layered between rye bread.

None of the deliciousness of the sandwich is lost in the reuben bake. The ingredients are stacked in a 9 x 13 baking dish. It's perfect way to use up leftover corned beef.

A corned beef casserole with a piece cut out of it.

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Why you'll love this reuben casserole

Reubens for a group: If you're looking to serve a group reuben sandwiches, this comforting casserole is the ideal recipe to prepare. You get all the flavor of a reuben sandwich in one dish without having to prepare individual sandwiches.
Easy to make: This one dish meal is super easy to make. All the ingredients are layered in a dish and baked in the oven.
Comfort food with a twist: This casserole is a classic comfort food sandwich turned into a hearty, warm and cheesy casserole.
Meal prep star: Assemble this easy reuben casserole recipe in advance (up to 24 hours) and just heat when ready to serve.
Use leftover corned beef: If you've got some corned beef leftover from St. Patrick's Day, add it to this recipe. The comfort food casserole is the perfect St. Patrick's dinner idea.

Ingredients for a reuben casserole bake

Gather all the ingredients for this delicious corned beef casserole recipe. Scroll down to the recipe card for full quantities of the ingredients.

Cooked corned beef, sauerkraut, marble rye bread, shredded Swiss cheese, ketchup, relish, mayonnaise.

Salted butter
Marble rye bread
Cooked corned beef
Sauerkraut
Mayonnaise
Ketchup
Sweet pickle relish
Swiss cheese
Fresh parsley

Substitutions

Marble rye bread: Try pumpernickel, dark rye or light rye bread too.
Cooked corned beef: My Instant Pot corned beef and cabbage recipe is the one I use to make the most tender corned beef. Just skip the steps of adding the vegetables. Leftover corned beef or deli counter sliced corned beef from the grocery store are great options too.
Sweet pickle relish: Finely chop sweet or bread and butter pickles as other options.
Swiss cheese: Gruyere or fontina cheese are tasty alternatives.

How to make this reuben bake recipe

Layering the ingredients of a reuben sandwich in a baking dish makes for an easy comfort food meal. I love that this corned beef casserole recipe is so easy to toss together. Scroll to the recipe card for the complete instructions.

Step 1: Start off by tossing the rye bread cubes with melted butter. Transfer half of the cubes to a 9 x 13 inch casserole dish.

Sauerkraut on top of a reuben casserole.

Step 2: Next spread the corned beef on top of the bread cubes. Then add the sauerkraut.

Adding Swiss cheese to a reuben casserole.

Step 3: In a small bowl, make the homemade thousand island dressing. Combine mayonnaise, ketchup, and sweet pickle relish. Spread the dressing evenly over the sauerkraut.

Swiss cheese, cubes of marble rye bread for a layered reuben casserole

Step 4: Next sprinkle half of the shredded Swiss cheese evenly over the dressing.

Step 5: Top with the remaining buttered bread cubes. Sprinkle the remainder of the cheese on top of the casserole.

A reuben casserole bake with one piece missing.

Step 6: Bake until the casserole to hot and the cheese melts.

Expert tips

Shred the Swiss cheese either by hand or with a food processor. It will be much fresher tasting than the preshredded variety. It also melts beautifully.
Homemade dressings take only a few ingredients to make and are in well stocked pantries. Whipping up a delicious thousand island dressing takes less than a minute. A store bought dressing of this creamy dressing is also an alternative. Bottle Russian dressing is an alternative.

Frequently asked questions

How do you keep a reuben casserole from being soggy?

Sauerkraut is typically stored in water, and this excess liquid can make the casserole soggy. Drain the sauerkraut, and squeeze out as much water as you can.

Can you make a reuben casserole ahead of time?

Yes! Assemble the casserole up to 24 hours in advance. Cover and refrigerate. Just bake when you're ready to serve. You made need to add 10 to 15 minutes more baking time.

How do you store leftover casserole?

Completely cool the casserole and cover with plastic wrap. Store in the refrigerator for up to 3 days. Alternately, transfer the cooled casserole to an airtight container.

Can you freeze the casserole?

Yes you can! Transfer the casserole to an airtight container. Store in the freezer for up to 1 month. Thaw before heating.

How do you reheat a reuben casserole?

Reheat leftovers in the microwave. Use 60% power for 1 to 2 minutes until the reuben casserole is hot and the cheese is melty. Or warm the casserole in a 350 degree oven for 20-30 minutes.

A layered Irish reuben casserole recipe.

What to serve with a reuben casserole

The same side dishes you serve with with a reuben are delicious with the favorite sandwich in casserole form.

These Crispy Oven Fries are so easy to make and you'll never know that they're baked and not fried.
My Homestyle Red Potato Salad is a classic side dish with sandwiches and tasty with this casserole.
Add these fun Roasted Carrot and Parsnip Fries along side the casserole.