Easy Keto Reuben Casserole Recipe

Sometimes, you just crave a classic that feels a bit too elaborate for everyday cooking. That’s where my Easy Keto Reuben Casserole comes in. It takes those fantastic flavors of a traditional Reuben sandwich and transforms them into a simple, satisfying dish perfect for weeknight dinners or gatherings. You get all the deliciousness without the fuss!

Why You’ll Love This Easy Keto Reuben Casserole Recipe

I’ve always loved corned beef and sauerkraut, but making a full sandwich just isn’t practical for me most days. By turning this comforting combination into a casserole, I’ve discovered an easy way to indulge in those flavors regularly—without the bread. Each bite is packed with protein and flavor, making it a real treat to share with family.

This casserole is a game-changer in the kitchen. You get that beloved Reuben experience layered into one delicious dish, which makes it much easier to prepare and serve. Plus, it’s satisfying enough to hold everyone over without feeling heavy.

Another favorite of mine is the Simple Low Carb Turkey Zucchini Casserole.

What Makes this Recipe Unique

• Protein-Focused Ingredients: With a hearty base of corned beef and rich Swiss cheese, this casserole delivers both flavor and satisfying protein in each bite.
• Creamy Sauce: The mixture of full-fat mayonnaise and sugar-free ketchup creates a smooth base that ties everything together, ensuring it doesn’t dry out during baking.
• Flavor Development: The blend of smoked paprika and dill pickle relish adds a depth and zing that elevates this dish beyond the ordinary.
• Textural Contrast: You’ll experience a wonderful contrast between the gooey melted cheese topping and the tender layers beneath, making each serving delightful to eat.

Estimated Macros & Calories

Here’s an idea of what to expect nutritionally.

(estimated per serving, without optional ingredients)

• Calories: 370
• Protein: 30 g
• Carbohydrates: 8 g
• Fat: 25 g
• Fiber: 3 g

The Most Authentic Easy Keto Reuben Casserole Recipe

This Easy Keto Reuben Casserole stays true to the essence of what makes a Reuben so beloved—comforting flavors and a satisfying profile. It combines classic ingredients that draw on the nostalgic elements of this iconic dish while making it accessible for everyday meals.

Ingredient Notes

• Deli Corned Beef: This ingredient is the star of the show, providing a savory, meaty component that fills you up.
• Sauerkraut: It adds a tangy crunch, which complements the richness of the cheese and beef perfectly.
• Shredded Swiss Cheese: This cheese contributes creaminess and that lovely gooey texture when melted—definitely a must in this recipe!
• Full-Fat Mayonnaise: It lends creaminess to the sauce, ensuring the casserole stays moist and flavorful.
• Sugar-Free Ketchup: This condiment helps balance the flavors with a slight sweetness without the carbs, an essential in keeping the dish keto.

Instructions

Step 1: Preheat the Oven

Start by preheating your oven to 350°F (175°C). While the oven heats, grease a 9×13-inch baking dish so the casserole won’t stick.

Step 2: Mix the Sauce

In a large mixing bowl, combine the mayonnaise, sugar-free ketchup, chopped onion, and apple cider vinegar. Mix until everything is smooth and well incorporated.

Step 3: Combine Ingredients

Add the chopped corned beef, well-drained sauerkraut, dill pickle relish, sugar substitute, and smoked paprika into the bowl. Stir until all the ingredients are thoroughly mixed and coated with the sauce.

Step 4: Assemble the Casserole

Transfer the mixture into the greased baking dish, spreading it evenly. Then, layer the shredded Swiss cheese on top, covering the entire surface.

Step 5: Bake

Place the dish in the preheated oven and bake until the cheese is melted and the top is golden brown. Once it’s done, remove it from the oven and let it rest for a few minutes before serving.

Tips and Mistakes to Avoid

Be sure to drain your sauerkraut well. Excess moisture can make the casserole soggy, which is less than ideal.

Don’t skip the resting time after baking. Allowing it to sit for a few minutes helps set the layers and makes it easier to serve.

Watch the casserole closely as it bakes. If your oven runs hot, it may brown faster than expected. You want it golden but not burnt.

Looking for another easy idea? Don’t miss my Easy Hamburger Green Bean Casserole.

Storage Tips

Store leftovers in an airtight container in the refrigerator for up to three days. This casserole reheats well, making it perfect for meal prep. If you decide to freeze it, enjoy it fresh instead, as freezing may alter the texture of the cheese.

Variations and Substitutions

Looking to mix things up? Try adding a layer of roasted vegetables for a little added health boost. If you’re avoiding dairy, you can experiment with a non-dairy cheese that melts well.

For a more intense flavor, consider using a higher-protein version of the cheese you choose.

If you need a gluten-free option, just ensure your ingredients, like the ketchup and relish, are certified gluten-free.

You might also enjoy my Easy Chicken Stuffing Casserole Delight, a great next recipe to try.

Why This Recipe Is The Real Deal

The real charm of this Easy Keto Reuben Casserole lies in its rich, satisfying texture combined with the classic flavors we adore. Each component plays a role—from the creamy sauce to the chewy meat that delivers that familiar experience.

You wouldn’t believe how straightforward it is to whip up this dish. Even on busy days, you can pull it together quickly, satisfying the craving without turning dinner into a major event.

More High Protein Recipes You’ll Love

If you enjoyed this recipe, these easy ideas are a great next step:

• Loaded Beef and Potato Casserole
• Cheesy Hobo Casserole Delight
• Quick Mediterranean Beef Pita Pockets

Want more? Browse all of our high protein dinner recipes or explore the full high protein recipes collection.

Frequently Asked Questions

The Bottom Line

So, if you’re in the mood for a comforting classic that’s been simplified for everyday life, give this casserole a try. I think you’ll be pleasantly surprised, and I’d love to hear how it turned out for you!

Print Recipe

Easy Keto Reuben Casserole Recipe

This delicious Easy Keto Reuben Casserole combines savory corned beef and tangy sauerkraut, all finished with melted Swiss cheese for a satisfying low-carb meal.

Prep Time15 minutes mins

Cook Time25 minutes mins

Total Time40 minutes mins

Course: Dinner

Keyword: high protein, high protein dinner, keto reuben casserole recipe

Servings: 6

Calories: 540kcal

Ingredients

Casserole Components

• 1 pound Deli Corned Beef, chopped
• 1 cup Sauerkraut, well-drained
• 2 cups Shredded Swiss Cheese or a blend of Swiss and Mozzarella
• 1 cup Full-Fat Mayonnaise
• 3 tablespoons Sugar-Free Ketchup
• 2 tablespoons Finely Chopped Onion
• 2 teaspoons Granulated Sugar Substitute
• 2 teaspoons Dill Pickle Relish
• 2 teaspoons Apple Cider Vinegar
• 1 teaspoon Smoked Paprika for a flavor boost

Instructions

Preparation Steps

• Begin by preheating your oven to 350°F (175°C) and greasing a 9x13-inch baking dish.
• In a large mixing bowl, combine the mayonnaise, sugar-free ketchup, chopped onion, and apple cider vinegar. Blend until smooth.
• Next, add in the chopped corned beef, drained sauerkraut, dill pickle relish, sugar substitute, and smoked paprika, mixing everything thoroughly until well-coated.
• Transfer the mixture into the prepared baking dish and layer the shredded Swiss cheese evenly on top.
• Bake in the preheated oven for 25 minutes, or until the cheese is melted and the casserole is golden brown. Allow it to rest for 5 minutes before serving.

Notes

This casserole is perfect for meal prep and can be stored in the fridge for up to 4 days. Reheat individual portions in the microwave for a quick meal.

Enhance the flavor by adding some chopped fresh parsley or chives before serving for added brightness!