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It’s your favorite deli sandwich — in casserole form! This Dump-and-Bake Reuben Casserole is an easy, one dish meal that only requires 5 ingredients and about 10 minutes of prep.

It’s perfect for St. Patrick’s Day, and equally delicious for a fun twist on the regular weeknight dinner!

5 ingredient Reuben Casserole in a green baking dish with a silver serving spoon

Do you love Reuben sandwiches as much as I do?! Something about the tangy sauerkraut, the salty corned beef, the sweet Thousand Island dressing, and the creamy Swiss cheese just does it for me.

It’s truly the perfect combination of flavors and textures!

A serving of Reuben Casserole on a plate with yellow flowers in the background

If you share my love for the iconic deli lunch, then you’re really going to appreciate this dinner! It’s got everything that you adore — minus the bread!

The Ingredients for Making Reuben Casserole

Here are the 5 ingredients that come together like magic: a block of Swiss cheese, corned beef, Thousand Island dressing, a large tomato, and a bag of prepared sauerkraut. That’s it!

The 5 ingredients that are used to prepare a Dump-and-Bake Reuben Casserole.

I told you this was easy…

I call this a dump-and-bake Reuben Casserole because there’s virtually no prep work necessary! Unlike other casseroles that involve multiple steps (such as boiling pasta or cooking the meat), this particular dinner takes advantage of some store-bought shortcuts. That’s my favorite kind of cooking!

Here I used lean corned beef from the deli counter, which I just chopped on my own once I got home.

You can also use leftover corned beef from another meal, such as my Dump-and-Bake Corned Beef and Cabbage that I shared last week. If you have some extra corned beef from that dish, then this is the perfect way to use it up!

Chopped corned beef, grated Swiss cheese, and sliced tomato on a cutting board for Reuben Casserole.

The only other “prep work” involves grating your Swiss cheese and slicing your tomato. So simple (and fast)!

Top Tip for Making the Best Reuben Casserole

The key to a successful Reuben Casserole (in my opinion), is to drain the sauerkraut really well.

You don’t want a soggy dish, so drain the sauerkraut in a colander and then squeeze it dry in a dishtowel, wringing out all of the excess liquid before it goes into your casserole.

That way, after it bakes, the casserole is firm and layered just like an Irish version of lasagna!????

How to Make Reuben Casserole in 3 Easy Steps

  1. Spray an 8-inch square baking dish with cooking spray.
  2. Place sauerkraut in the bottom of the prepared dish. Top with tomato slices and drizzle with salad dressing. Add diced corned beef over top, and sprinkle with grated cheese.
  3. Bake, uncovered then garnish with fresh parsley if desired.
Reuben casserole on a green and white plate with a fork

I hope that you enjoy this easy dump-and-bake dinner just as much as I do!

Extra Tips

Cooking Just for Two? Cut the ingredients in half and prepare casserole in a 1-quart baking dish. Cooking instructions remain the same.

Want to Prep Ahead? Layer all of the ingredients in the dish and keep covered in the refrigerator for up to 24 hours (until ready to bake). You may need to add 5-10 minutes to the baking time in order to get the dish heated through if you’re cooking it cold.

More Easy Casserole Recipes You Might Like:

5-Ingredient Dump-and-Bake Reuben Casserole

5 from 1 vote
Prep: 10 minutes
Cook: 20 minutes
Total: 30 minutes
Servings 4 servings
Calories 433 kcal
Made with just 5 ingredients this Dump and Bake Reuben Casserole combines all the delicious flavors of your deli favorite into one comforting casserole.

Ingredients
  

  • 2 lb. bag of sauerkraut about 3.75 cups, drained and squeezed very dry in a dishtowel
  • 1 large tomato horizontally sliced into 4 rounds
  • ½ cup Russian or Thousand Island dressing
  • 12 ounces deli sliced corned beef diced (or use leftover cooked corned beef from another meal)
  • 8 ounces grated Swiss cheese
  • Optional garnish: chopped fresh parsley

Instructions

  • Preheat oven to 350 degrees F (180C). Spray an 8-inch square baking dish with cooking spray.
  • Place sauerkraut in the bottom of the prepared dish. Top with tomato slices and drizzle with salad dressing. Add diced corned beef over top, and sprinkle with grated cheese.
  • Bake, uncovered, for 20-25 minutes, or until heated through. Garnish with fresh parsley, if desired.

Notes

Cooking Just for Two? Cut the ingredients in half and prepare casserole in a 1-quart baking dish. Cooking instructions remain the same.
Want to Prep Ahead? Layer all of the ingredients in the dish and keep covered in the refrigerator for up to 24 hours (until ready to bake). You may need to add 5-10 minutes to the baking time in order to get the dish heated through if you’re cooking it cold.

Nutrition

Serving: 1/4 of the recipeCalories: 433kcalCarbohydrates: 19.7gProtein: 29.7gFat: 27.4gSaturated Fat: 14.6gCholesterol: 82.2mgSodium: 2391mgFiber: 3.8gSugar: 9.4g
Keyword: Corned Beef Casserole, Reuben Casserole
Course: Dinner
Cuisine: Irish
Author: The Seasoned Mom
blair

Hey, I’m Blair!

Welcome to my farmhouse kitchen in the foothills of Virginia’s Blue Ridge Mountains. Inspired by local traditions and seasonal fare, you’ll find plenty of easy, comforting recipes that bring your family together around the table. It’s down-home, country-style cooking!

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Comments

  1. A reuben casserole? I’m impressed! This looks wonderful, Blair! I love that you recreated a classic sandwich in casserole form. And you can’t go wrong with all of that melty cheese on top. Looks perfect!

    1. Hi, Linda! Thanks for your support. I’m so glad that you enjoy the recipes!

      Unfortunately, the Fast, Fresh & Fit cookbook is only available right now as an electronic download. I have plans for a printed cookbook in the months ahead, though, so stay tuned if that’s your preference! 🙂

    1. Hi, Crystal! I think it needs something. If you don’t want to use Russian, Thousand Island, or French dressing, you can substitute with a different dressing that you prefer — maybe Ranch or Caesar?

    1. Hi, Lee! I would pair it with a loaf of crusty bread, biscuits or dinner rolls. You could also offer a potato dish on the side — either baked potatoes, roasted potatoes, or mashed potatoes. If you’d like something green, a simple salad would be nice, or try green beans or sauteed spinach. 🙂