Name: Keto Reuben Casserole
Prep time: 15 min
Cook time: 25 min
Total time: 40 min
Ingredients: 1/3 cup mayonnaise; 2 ounces cream cheese (softened (about 3 tablespoons)); 3 tablespoons keto ketchup (or any sugar-free ketchup); 1 tablespoon prepared horseradish; 1/2 teaspoon sweet smoked paprika; Salt and pepper; 16 ounces thinly sliced corned beef (chopped); 16 ounces sauerkraut (drained and blotted dry); 1/2 cup chopped dill pickles; 1 teaspoon caraway seeds (toasted and crushed); 2 cups shredded Swiss cheese

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Keto Reuben Casserole is a wonderful twist on the much loved Reuben Sandwich. Prepare for mouthfuls of flavor before you - it has all of the ingredients you love in the confines one cheesy dish. With just 15 minutes of hands-on time, this recipe is perfect for busy weeknights.

Photo of a Keto Reuben Casserole on a white plate with fork pulling a cheesy bite from it.

What happens when you combine all the flavors of your favorite sandwich into a casserole?

The result is the most comforting of dishes that you will turn to again and again!

This Low Carb Reuben Casserole is quick to make and absolutely delicious. It makes a satisfying dinner, and leftovers are great for lunch the next day.

Pro Tip

If your sauerkraut isn't well drained your casserole will be soggy. I recommend placing it in a fine metal strainer and placing over a bowl. Press down with paper towels to push the excess liquid out.

Can You Have Ketchup On Keto?

Most ketchup is loaded with sugar and is not keto-friendly. There are sugar-free versions, but many of them contain sucralose, which isn't considered a clean ingredient and may lead to sugar cravings in some.

I prefer to make homemade ketchup, but I keep Primal Kitchen on hand for those times when I am short on time.

What Do You Serve with Reuben Casserole?

I think of this casserole as a meal on its own. If you would like to serve it with an additional vegetable, try green beans, Brussels sprouts, or a simple green salad.

Can This Recipe Be Make Ahead of Time?

Yes! This recipe can be made up to a day ahead of time. Leftovers will keep in a sealed container in the refrigerator for up to three days.

Can Reuben Casserole Be Frozen?

This recipe can be frozen, but there is a slight decline in the overall texture. If you choose to freeze it, it will keep for about three months.

How to Make Keto Reuben Casserole

This is a visual walkthrough for those that like pictures. See the recipe card below for the complete recipe with measurements.

First, start by preheating your oven and spraying your casserole dish with cooking spray. I like avocado oil, but any oil works here.

Photo of mayonnaise, cream cheese, ketchup, horseradish, paprika, salt, and pepper in a small bowl.

Next, combine the mayonnaise, cream cheese, ketchup, horseradish, and smoked paprika in a bowl. Season to taste with salt and pepper.

Photo of Photo of mayonnaise, cream cheese, ketchup, horseradish, paprika, salt, and pepper that have been whisked together in a small bowl.

After that, chop the corned beef and layer half of it on the bottom of the prepped dish. Top with half of the well-drained sauerkraut, chopped pickles, and caraway seeds.

Photo of corned beef that has been topped with sauerkraut, caraway seeds, and chopped pickles in a light blue casserole dish.

Drizzle with half of the sauce and top with half of the cheese.

Photo of a mixture of Photo of mayonnaise, cream cheese, ketchup, horseradish, paprika, salt, and pepper that has been drizzled over corned beef, chopped pickles sauerkraut, and caraway seeds.

Repeat the layers ending with the cheese. Bake for 25 minutes. Turn the heat to broil and cook until the top is browned and bubbling.

Photo of a casserole dish that is topped with cheese.