Best Keto Reuben Casserole

This article has links to products we may make commission from.

This Keto Reuben Casserole includes all the delicious ingredients in a Reuben sandwich – pastrami (or corned beef), sauerkraut, swiss cheese, and Thousand Island dressing.

» You might also like Keto Biscuits & Gravy Casserole or Low Carb Chicken Fajita Casserole.

Reuben Casserole

If you like Reuben sandwiches, you’re going to love this low-carb / keto casserole that tastes so much like the original, just without the rye bread.

Casseroles are a great way to turn a sandwich into a meal. It’s a great dish for a fall or winter evening when you just want to curl up with something warm and filling to eat. If you have extra corned beef left over try this keto corned beef hash.

For more great casseroles try one of these chicken casserole recipes.

Reuben Casserole

Ingredients You Need

  • Cauliflower About half of a head of cauliflower is enough for this recipe. Cut it into bite-sized pieces.
  • Salt and ground black pepper
  • Sauerkraut – Be sure to buy a sauerkraut with no added sugar. Always look at the ingredients list and go for one with low carbs and sugar. Before using it, drain as much of the liquid out as possible.
  • Keto Thousand Island Dressing – We have a recipe for this dressing that makes just the exact amount that you’ll use for the Reuben casserole. You can also buy Thousand Island dressing, but it will have a higher carb count than homemade.
  • Pastrami slices or corned beef – Corned beef is the traditional way to make a Reuben, but it can be hard to find and you might have to braise it yourself. I now mostly use sliced pastrami, because it’s easier and just as tasty.
  • Swiss cheese slices – Swiss cheese is so tasty on this casserole. If you can’t find it, you could also use provolone.

How to Make a Keto Reuben Casserole

Pre-heat the oven to 400° F.

Boil a pot of water and place the cauliflower pieces into the pot. Simmer at a low boil for 10 minutes. Strain the water out and allow the cauliflower to dry for 5 minutes.

Boiling cauliflower

Place the cauliflower pieces in the bottom of a 9”x13” casserole dish. Season with salt and pepper. Then spread on the sauerkraut.

Assembling the casserole

Next, drizzle on the Thousand Island dressing. Spread it out as evenly as you can with the back of the spoon.

Sauce on the casserole

Top with the slices of pastrami and slices of swiss cheese. If you want, you can use more pastrami and/or cheese. Neither of these have carbs, so you can add more protein or fat to your meal by layering more on.

Casserole with cheese slices

Bake for 25-30 minutes, until the cheese is bubbly and starting to get golden. Slice and serve hot.

Questions About Reuben Casserole

Is a Reuben made with pastrami or corned beef?

A classic Reuben is always made with corned beef, but because it’s sometimes hard to find and prepare corned beef, many people have switched it up and make it with pastrami. Served with pastrami, the sandwich actually has been given the name “Rachel”. It doesn’t matter greatly which one you use. Just use whatever is easiest for you to get.

What is on a Reuben sandwich?

A Reuben sandwich consists of rye bread, corned beef, Swiss cheese, sauerkraut, and Russian or Thousand Island dressing. We make our casserole as close to the sandwich as possible, but we do add cauliflower to the base to make it more filling, since we don’t include the rye bread.

Can I use frozen cauliflower?

Frozen cauliflower is already blanched (partially cooked) so it doesn’t take as long to cook as from raw. So using frozen cauliflower can save a little time in this recipe. You do still want to boil the frozen cauliflower, just until it’s no longer frozen, about 5 minutes, and let it dry out before using, so it doesn’t impart a lot of water.

Reuben Casserole

How Many Carbs in Reuben Casserole

This casserole cuts way down on the carbs in a traditional Reuben sandwich, because we don’t use the rye bread. It does have a small amount of carbs in the various ingredients, but also has a lot of fiber, so a serving of this casserole has about 4 net grams of carbs.

Alternatives & Substitutions

  • You can leave the cauliflower out of this dish, if you want. It’s an extra ingredient that’s not found in a traditional Reuben sandwich. We just add it to make the dish a little more filling. It’s perfectly good with or without it.
  • You can use Swiss, provolone, or even mozzarella cheese for the top. I prefer to use Swiss slices, but it’s also great with shredded mozzarella.
  • If you don’t like sauerkraut, you can use sautéed cabbage in its place, though that will detract from the overall taste of the dish.

What to Serve With This Dish?

These side dishes go well with this main dish and you can make them alongside, so they’re done at the same time.

YOU MIGHT ALSO LIKE

Like this post? Be sure to save it on your Pinterest board for later! Click to follow our Pinterest boards so you can find all our recipes!

Reuben Casserole

Keto Reuben Casserole

This Keto Reuben Casserole includes all the delicious ingredients in a Reuben sandwich – pastrami (or corned beef), sauerkraut, swiss cheese, and Thousand Island dressing.
4.91 from 10 votes
Print Rate
Course: Main Course
Cuisine: American
Keyword: Cauliflower, Pastrami, Sauerkraut
Prep Time: 10 mins
Cook Time: 20 mins
Total Time: 30 mins
Servings: 6 Servings
Calories: 257kcal
Author: Laura

Ingredients

  • 1/2 head cauliflower cut into bite-sized pieces
  • 1/2 teaspoon salt
  • 1/4 teaspoon ground black pepper
  • 14 ounces sauerkraut drained
  • 1 cup Keto Thousand Island Dressing
  • 1 pound pastrami slices
  • 8 ounces Swiss cheese slices

Instructions

  • Boil a pot of water and place the cauliflower pieces into the pot. Boil for 10 minutes. Strain and allow to dry for 5 minutes.
  • Pre-heat the oven to 400° F.
  • Place the cauliflower pieces in the bottom of a 9”x13” casserole dish. Season with salt and pepper.
  • Spread on the sauerkraut and drizzle on the Thousand Island dressing.
  • Top with slices of pastrami and slices of Swiss cheese.
  • Bake for 25-30 minutes, until the cheese is bubbly and starting to get golden.

Nutrition

Calories: 257kcal | Carbohydrates: 9g | Protein: 27g | Fat: 13g | Saturated Fat: 7g | Polyunsaturated Fat: 1g | Monounsaturated Fat: 4g | Trans Fat: 1g | Cholesterol: 71mg | Sodium: 1507mg | Potassium: 460mg | Fiber: 3g | Sugar: 3g | Vitamin A: 328IU | Vitamin C: 59mg | Calcium: 337mg | Iron: 4mg

The information shown is an estimate provided by an online nutrition calculator. It should not be considered a substitute for a professional nutritionist’s advice.

Pin it for later

Reuben Casserole
Best Keto Reuben Casserole

Leave a Reply

Your email address will not be published. Required fields are marked *

Recipe Rating