Keto Reuben Open-Faced Sandwich on wooden tray with side of pickles and a striped napkin in the background

This Keto Reuben is an Open-Faced Sandwich made with plenty of corned beef, cheese, sauerkraut, and thousand island dressing. piled on top of one half of a low carb Rye Bagel. This hearty bagel melt is perfect for using up any leftover meat you may have from your corned beef dinner!

The popular Reuben Sandwich just got a keto makeover! This low carb bagel melt has all the flavor and comfort you get from the original recipe. And, you will get that comfort food satisfaction when you have this on your plate!

Keto Reuben Bagel Melt on a wooden plate with multi-colored striped napkin in background

Why I made this Keto Reuben Sandwich

My very favorite sandwich pre-keto was the Reuben. I loved the buttery toasted rye bread combined with the salty corned beef and tangy sauerkraut. Buttery swiss cheese and a sweet and tangy Thousand Island Dressing were just delicious on this corned beef sandwich!

I knew I had to have a low carb version that I would be able to enjoy when I had the craving for a Reuben. So, in preparation for this sandwich, I went ahead and created a Keto Rye Bagel and a sugar-free Thousand Island Dressing recipe. This was a double win for me because the dressing also happens to be Grumpy’s favorite dressing of all time!

Open Faced Keto Reuben Bagel Sandwich on cookie sheet

What is a Keto Reuben Open-Faced Sandwich?

The Keto Reuben is a low carb version of an American Grilled Sandwich made up of corned beef, sauerkraut, cheese, and Russian Dressing. I used a Keto Rye Bagel instead of bread and used a sugar-free Thousand Island Dressing to sauce it up!!

What kind of meat do you eat on a Keto Reuben Sandwich?

The traditional meat is corned beef. You can buy it at the deli, or you can used leftover corned beef from a roast. However, I have used turkey or pastrami. When you use pastrami, you do have what is called the “Rachael”. I feel you can add any type of protein that is your preference.

Can I substitute Coleslaw for Sauerkraut?

You can, but that again, turns this Keto Reuben into a Rachael sandwich, especially if you use pastrami! I personally love the tang of sauerkraut in this sandwich!

What kind of dressing do you use in a Keto Reuben Sandwich?

The traditional is Russian. We prefer Thousand Island Dressing. The flavors however, are very similar where the Russian may have a sweeter side (and no pickles).

What do you eat with a Keto Reuben Sandwich?

When your eating a Keto Reuben, I recommend eating a low carb dill pickle or Pickled Green Beans! If you have a hankering for a chip on the side, try this Keto Zucchini Chips with Everything but the Bagel Seasoning!

How to make your Open-Faced Keto Reuben Sandwich

Slice your bagel in half and assemble ingredients needed for the sandwich.

Bagel sliced in half with sauerkraut, dressing, and corned beef slices assembled around the bagel in preparation for assembly.

Place 1 tablespoon dressing on top of each bagel half.

sliced bagels with thousand island dressing on top of each bagel to being laying.

Place 2 oz corned beef slices and 1 tbsp sauerkraut on top of the dressing layer.

Reuben Assembled with dressing meat, and sauerkraut,

Place a cheese slice on top of the sauerkraut and place bagel in the toaster oven or regular oven on the broil setting.

Reuben Assembled with dressing meat, sauerkraut, and cheese.

Broil sandwiches until cheese has melted and started to brown. Remove from the toaster oven and enjoy!

Broiled Keto Reuben Sandwich - Open Faced Bagel Melt on baking sheet

You may need

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What’s new? Check out my Grumpy’s Honeybunch Store on Amazon!  Thanks so much for being a part of Grumpy’s Honeybunch!

When I am making lunch for just myself or even for just Grumpy and me, I hate to heat my oven up for just a small sandwich. That is why I LOVE my Hamilton Beach Toaster Oven. Not only does it quickly heat up, but it has my keto Reubens hot and toasty in no time flat!

Other Recipes made with leftover Corned Beef

*If you made this Keto Reuben, please give it a star rating*

Keto Reuben Open-Faced Sandwich on wooden tray with side of pickles and a striped napkin in the background

Keto Reuben - Open Faced Sandwich

A low carb, open-faced version of the popular Reuben Sandwich made with a homemade Keto Rye Bagel and Sugar-Free Thousand Island Dressing
5 from 4 votes
Print Pin Rate
Course: Keto Main Dish
Cuisine: American
Keyword: Corned Beef Sandwich, Keto Reuben Sandwich, Open-Faced Sandwich, Reuben Melt
Prep Time: 7 minutes
Cook Time: 7 minutes
Total Time: 14 minutes
Servings: 2 open faced sandwiches
Calories: 321kcal



  • Pre-heat toaster oven on broil while assembling your sandwich
  • Slice bagel in half and cover each half with 1 tablespoon Thousand Island Dressing.
  • Place 2 oz corned beef on each bagel half.
  • Place 1 tbsp (or more if you wish) sauerkraut on top of corned beef.
  • Lay 1 oz slice swiss cheese on top of sauerkraut.
  • Place in toaster oven and broil until cheese is melted and bubbly.


Net Carbs = 5.5


Serving: 1/2 bagel sandwich | Calories: 321kcal | Carbohydrates: 7g | Protein: 19g | Fat: 24.5g | Cholesterol: 67mg | Sodium: 741mg | Fiber: 2.5g

About the Author: Shelby Law Ruttan

Shelby is the author/owner of Grumpy's Honeybunch. Established in 2007, she shares and preserves family recipes as well as recipes for cooking light and keto. She is an experienced, self-taught home cook who loves to share recipes with others. You can see her work on websites such as Veal Made Easy, Parade, Community Table, SoFab Food, Yummly, and FoodGawker.


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Shelby Welcome! I'm Shelby, author of Grumpy's Honeybunch. I have been sharing family favorite recipes since 2007. I started the Keto Diet in October 2017 and since then I have been creating Keto ... read more

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