Name: Delicious Keto Reuben Casserole for Cozy Weeknight Dinners
Prep time: 15 min
Cook time: 25 min
Total time: 45 min
Ingredients: 2 cups Corned Beef (can use leftover corned beef or deli slices); 1 cup Sauerkraut (drained well); 2 cups Swiss Cheese (can substitute with cheddar); 1/2 cup Dill Pickles (optional, can replace with relish); 2 tablespoons Butter or Cooking Spray (for greasing); 1/2 cup Russian Dressing (mix with whipping cream if desired); 1 teaspoon Caraway Seeds (for added flavor); 1 cup Sautéed Onions and Peppers (optional for extra complexity)

Jump to Recipe Print Recipe

As I was rummaging through my fridge, I had a lightbulb moment: what if I created a Keto Reuben Casserole that captures all the deliciousness of a classic Reuben sandwich without the carbs? Combining tender corned beef, tangy sauerkraut, and gooey Swiss cheese, this casserole is the ultimate comfort food that’s quick to whip up and super satisfying. Not only is it a fantastic low-carb dinner option, but it also reheats beautifully, making it perfect for meal prep. Whether you’re planning a cozy family dinner or simply looking to impress your friends, this dish is sure to become a go-to favorite in your kitchen. Ready to dive into a dish that’s both comforting and keto-friendly? Let’s cook!

Why is this Keto Reuben Casserole a must-try?

Unique Flavor Twist: This casserole brings together bold flavors from corned beef and sauerkraut, perfectly melding into a gooey, cheesy delight!

Quick and Easy: Don’t spend hours in the kitchen; this casserole comes together in a flash, offering a weeknight meal that suits your busy lifestyle.

Meal Prep Friendly: Make your life easier by preparing this dish in advance—simply bake it when you’re ready!

Low Carb Delight: Enjoy comfort food guilt-free with only 4g of net carbs per serving, making it a perfect choice for your keto lifestyle!

Crowd-Pleaser: Impress family and friends alike with this satisfying dish that has all the rich flavors of a classic Reuben without the carbs. Serve it alongside some Keto Cheesy Garlic Bread to elevate your meal even further!

Keto Reuben Casserole Ingredients

For the Casserole
Corned Beef – Main protein source; adds savory flavor and can use leftover corned beef or deli slices.
Sauerkraut – Provides tanginess and moisture; make sure to drain well to avoid excess liquid in the Keto Reuben Casserole.
Swiss Cheese – Delivers creaminess and meltability; contributes to the traditional Reuben flavor, but you can substitute with cheddar for a different twist.
Dill Pickles – Adds crunch and acidity; optional, but can replace with relish for a sweeter flavor.
Butter or Cooking Spray – Necessary for greasing the casserole dish, ensuring easy release of the finished casserole.
Russian Dressing – Combines with whipping cream for added moisture and flavor; feel free to substitute with homemade keto-friendly dressing for extra control over ingredients.
Optional Add-ins
Caraway Seeds – Sprinkling them between layers mimics the rye bread notes of a traditional Reuben.
Sautéed Onions and Peppers – Adding these enhances flavor and texture if you desire more complexity.

With these ingredients, you’re just a few steps away from creating a delicious Keto Reuben Casserole that the whole family will love!

Step‑by‑Step Instructions for Keto Reuben Casserole

Step 1: Preheat the Oven
Begin by preheating your oven to 400°F (200°C). This initial step is crucial for achieving that perfect bubbly cheese topping later on. While the oven heats up, gather your casserole dish and greasing spray or butter to get ready for layering those delicious ingredients.

Step 2: Drain the Sauerkraut
Take your sauerkraut and place it in a mesh strainer to drain the excess liquid thoroughly. This step is essential to maintain the casserole’s texture, preventing it from becoming too soggy during baking. Press gently with a spoon to ensure most liquid is removed, and set it aside once drained.

Step 3: Grease the Casserole Dish
Use butter or nonstick cooking spray to generously grease the bottom and sides of your casserole dish. This step ensures easy removal of the Keto Reuben Casserole after baking, allowing for a beautifully intact serving. Be sure to cover all areas to avoid any sticking incidents.

Step 4: First Layer of Corned Beef
Layer half of the corned beef at the bottom of your greased casserole dish, spreading it evenly across the surface. This savory protein acts as the perfect base. The aroma of the corned beef will begin to fill your kitchen, inviting everyone for what’s to come!

Step 5: Add Sauerkraut and Pickles
On top of the first layer of corned beef, evenly distribute the drained sauerkraut and sprinkle the dill pickles over it. This combination adds a wonderful tang and crunch, reminiscent of a classic Reuben sandwich. You want each bite to be bursting with flavor, so spread everything out nicely.

Step 6: Drizzle with Dressing and Cheese
Next, drizzle half of your Russian dressing mixture over the sauerkraut and then sprinkle one-third of the Swiss cheese on top. This creamy layer will melt beautifully, binding all those delicious flavors together. The cheese should start to feel sticky, indicating you’re on the right track!

Step 7: Repeat the Layers
For the second layer, repeat the process by adding the remaining corned beef, followed by another layer of sauerkraut, pickles, dressing, and the rest of the Swiss cheese. Aim for an even distribution to ensure every bite of this Keto Reuben Casserole is packed with its distinct flavors.

Step 8: Cover and Bake
Cover your prepared casserole tightly with aluminum foil and place it in the preheated oven. Bake for about 10-15 minutes, or until the cheese is bubbling. This step helps to meld those gorgeous flavors together, creating a comforting scent throughout your kitchen.

Step 9: Broil for a Golden Top
After baking, remove the foil and turn on the broiler. Broil for an additional 2-3 minutes or until the top is golden and crispy. Keep a close eye during this step to prevent burning; you want that enticing golden crust that makes your Keto Reuben Casserole irresistible.

Step 10: Serve and Enjoy
Once done, carefully remove the casserole from the oven and let it cool for a few minutes. This brief resting time helps the layers set, making it easier to serve. Dish it up warm and get ready to revel in the cozy, cheesy comfort of your homemade Keto Reuben Casserole!

Make Ahead Options

These Easy Keto Reuben Casserole preparations are fantastic for busy weeknights! You can assemble the casserole and refrigerate it up to 24 hours before baking. Simply layer the ingredients as directed, then cover tightly with aluminum foil to maintain freshness and prevent drying out. When you’re ready to serve, preheat your oven to 350°F (175°C) and bake directly from the fridge until heated through—this usually takes an additional 10-15 minutes. This method ensures your Keto Reuben Casserole remains just as delicious and satisfying, making mealtime stress-free while still delivering that comforting, cheesy goodness you crave.

How to Store and Freeze Keto Reuben Casserole

Fridge: Store your leftover Keto Reuben Casserole in an airtight container for up to 3 days. Ensure it’s fully cooled before sealing to maintain freshness.

Freezer: For longer storage, wrap the casserole tightly in plastic wrap followed by aluminum foil. It can be frozen for up to 3 months.

Reheating: When ready to enjoy, thaw overnight in the fridge, then reheat in the oven at 350°F (175°C) until heated through. Avoid microwave reheating to preserve texture.

Make-Ahead Tip: You can prepare the entire casserole and store it unbaked in the fridge for up to 24 hours before baking. Just pop it in the oven when you’re ready!

Expert Tips for Keto Reuben Casserole

Drain Sauerkraut Well: Ensure to thoroughly drain the sauerkraut to prevent your Keto Reuben Casserole from becoming soggy. Excess moisture can negatively affect the texture.
Layering Matters: Layer your ingredients in the specified order for even cooking and improved flavor blending. This helps to capture all the delicious essence in each bite.
Add Flavor Boosters: Sprinkle caraway seeds between layers for a hint of rye flavor, reminiscent of a traditional Reuben. It elevates the dish with extra depth.
Use Fresh Ingredients: Whenever possible, opt for fresh corned beef and high-quality Swiss cheese. This enhances the overall taste and satisfaction of your casserole.
Perfect Broiling: Keep a close watch while broiling; this step is crucial for achieving that golden, crispy top. A minute too long can turn perfection into burnout!

What to Serve with Easy Keto Reuben Casserole

Elevate your dining experience with delightful sides that complement the rich, cheesy flavors of this comforting casserole.

Creamy Mashed Cauliflower: This low-carb alternative offers a smooth, velvety texture, perfect for soaking up any extra dressing.
Garlic Butter Green Beans: Crunchy and fresh, these green beans add a pop of color and zest, balancing the casserole’s richness beautifully.
Keto Cheesy Garlic Bread: A fantastic side that brings that satisfying crunch, enhancing a comforting meal without straying from your keto goals.
Pickled Vegetables: A tangy, crunchy variety of pickled veggies can add brightness and a refreshing contrast to the hearty casserole.
Crispy Bacon-Wrapped Asparagus: This savory treat brings a delightful crunch and smoky flavor that pairs wonderfully with the casserole.
Creamy Coleslaw: Cool and crisp, coleslaw offers a delightful crunch and creaminess that complements the warmth of the Easy Keto Reuben Casserole.
Sparkling Water with Lemon: Keep it simple and refreshing with a bubbly drink that cleanses the palate between bites.
Low-Carb Cheesecake: Finish off your meal with a slice of decadent, low-carb cheesecake for a sweet treat that won’t break your diet!

Keto Reuben Casserole Variations

Feel free to make this Keto Reuben Casserole uniquely yours with these exciting twists and substitutions!

Creamy Upgrade: Substitute whipping cream with softened cream cheese for an even richer, creamier texture. It will hold the casserole together beautifully, enhancing the cheesy goodness.
Rye Bread Layer: If you’re not strictly following a keto diet, add a layer of thinly sliced rye bread for that traditional Reuben crunch. It adds delightful texture alongside the savory layers.
Sautéed Veggies: Enhance the flavor profile by adding sautéed onions and bell peppers. These bring an added sweetness and a pop of color, transforming the casserole into a colorful feast.
Spicy Kick: For those who love heat, mix in some sliced jalapeños or a dash of hot sauce with the dressing. This zesty variation will give your casserole a delightful kick!
Herb Infusion: Sprinkle fresh herbs like dill or parsley throughout the layers. This brightens the flavors and adds a touch of freshness that beautifully complements the rich cheese and meat.
Keto-Friendly Dressing: Swap the store-bought Russian dressing for a homemade version made with mayonnaise, vinegar, and spices. It’s customizable to your taste and keeps your dish perfectly keto-friendly.
Vegetarian Option: Replace corned beef with a hearty mix of sautéed mushrooms and spinach for a vegetarian twist. This substitution provides a delightful umami flavor while still being satisfying.
Cheese Variations: Experiment with different cheeses like pepper jack for a spicy twist or gouda for something a little smoky. Each cheese brings its own personality to the dish!

Remember, the goal is to make it fun and delicious! Pair this hearty casserole with a side of Keto Cheesy Garlic Bread for a complete, comforting meal that everyone will love!

Easy Keto Reuben Casserole Recipe FAQs

What type of corned beef should I use?
Absolutely! You can use leftover corned beef or deli slices, depending on what you have on hand. Just make sure it’s sliced thinly for easier layering and better flavor distribution throughout the casserole.

How should I store leftover Keto Reuben Casserole?
Store your leftover casserole in an airtight container in the refrigerator for up to 3 days. Make sure it’s completely cooled before sealing, as this helps maintain freshness and flavor.

Can I freeze Keto Reuben Casserole?
Yes, you can freeze it! Wrap the casserole tightly in plastic wrap, followed by aluminum foil, and it can be stored in the freezer for up to 3 months. When you’re ready to enjoy it, thaw it overnight in the fridge, and reheat in the oven at 350°F (175°C) until heated through. This method preserves texture better than microwaving.

What if my casserole turns out soggy?
To prevent a soggy casserole, it’s crucial to thoroughly drain the sauerkraut. Use a mesh strainer to remove excess liquid, and press gently with a spoon to ensure it’s as dry as possible before layering. Also, consider using less dressing if necessary.

Is this Keto Reuben Casserole safe for my gluten-sensitive friends?
Absolutely! As long as you use gluten-free alternatives for any ingredients like Russian dressing, this casserole is a great choice for gluten-sensitive diets. Be sure to double-check labels to avoid any hidden gluten ingredients.

Can I make this casserole ahead of time?
Yes! You can prepare the entire Keto Reuben Casserole and store it unbaked in the refrigerator for up to 24 hours. Just cover it tightly with foil or plastic wrap. When you’re ready to bake, pop it in the oven directly, and enjoy a delicious meal with less stress in the kitchen!