Keto Reuben Chaffle Sandwich
Published September 22, 2019 • Updated February 25, 2026
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Ingredients
1 egg -
½ cup mozzarella cheese
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2 tablespoons almond flour
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2 tablespoons low-carb thousand island dressing
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1/4 teaspoon baking powder
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1/4 teaspoon caraway seeds
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2 slices of corned beef
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1 slice swiss cheese
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2 tablespoons sauerkraut
Step by Step Instructions
Step by Step Instructions
Mix the chaffle batter
In a small bowl, whisk together egg, mozzarella cheese, almond flour, 1 tablespoon thousand island dressing, caraway seeds and baking powder.
Add to waffle maker
Pour the reuben chaffle mixture into the center of the waffle iron. Close the waffle maker and let cook for 5-7 minutes or until waffle is golden brown and crisp. If using a mini dash waffle maker, only pour half the batter onto the waffle iron. This recipe will make two mini chaffles.
Make a waffle
Remove chaffle from the waffle maker. Repeat with remaining batter if using a mini dash waffle maker.
Assemble sandwich
On a piece of parchment paper, lay down the corned beef and top with a slice of swiss cheese. Heat in the microwave for 20-30 seconds until cheese starts to melt. Remove from microwave. Spread remaining tablespoon of low-carb thousand island dressing on each chaffle, layer the heated corned beef and swiss cheese and top with sauerkraut and remaining chaffle.
Nutrition disclaimer
The nutrition information provided is an estimate and is for informational purposes only. I am a Doctor of Pharmacy (Pharm.D.); however, this content is not intended to be a substitute for professional medical advice, diagnosis, or treatment. Always consult your physician or other qualified health provider before making any lifestyle changes or beginning a new nutrition program.
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Get My Macros + Recipes →Frequently Asked Questions
Can I use a different type of cheese instead of mozzarella?
Yes, cheddar or provolone both work. The texture and melt will be a little different, but still delicious.
What can I use instead of almond flour?
For nut-free, use coconut flour. It absorbs more moisture, so use about 1 tablespoon coconut flour for every 2 tablespoons almond flour called for.
How should I store leftover chaffles?
Store them in an airtight container in the fridge for up to 3 days. Reheat in a toaster or air fryer to get them crispy again.
Is this recipe suitable for meal prep?
The chaffles hold up well if you make them ahead. Assemble the sandwich when you're ready to eat so everything stays crisp.
How many carbs are in this Keto Reuben Chaffle Sandwich?
The exact count depends on your ingredient brands, but this sandwich comes in around 5-7 grams of net carbs.
If you miss a good Reuben sandwich with lots of sliced corned beef, melted swiss cheese, and a pile of sauerkraut, I’ve got good news. This chaffle version brings it all back.
The chaffle batter gets caraway seeds and a splash of thousand island dressing to mimic rye bread. Cook it a little longer and it crisps up just like the real thing.
Any waffle maker works for chaffles. 
Traditional Reubens use corned beef, but pastrami works too. I go with corned beef.
Yes, 
Made a batch of four of these on Sunday and have been eating them for lunch all week, and the thing I didn't expect is how well the chaffle holds up in the fridge. I keep the sauerkraut separate and just toast the chaffle in the air fryer for 2-3 minutes before assembling and it comes out crispy every time. The caraway seeds are doing something to make it actually taste like rye bread (this surprised me more than it probably should have). Double batch next Sunday for sure.
Keeping the sauerkraut separate is the only way to meal prep this one. It'll waterlog the chaffle in an hour otherwise. Nice system.
The caraway seeds are doing real work here. I was skeptical when I saw them listed but they actually pull the chaffle toward rye. First time making chaffles and I went straight to this one, which felt ambitious, but the batter came together in two minutes and the swiss melted over the sauerkraut exactly right. Already have corned beef defrosting for round two.
Caraway was the piece I was most unsure about when I was testing this. Glad it lands. For round two, go heavy on the corned beef - the chaffle is thick enough to hold it.
Your "PIN" buttons aren't working. Recipe sounds delicious, but haven't tried it yet. Will post a report when I do.
I'll get that figured out! Thanks for letting me know
Just made these and they were very flavorful and satisfying! The only changes I made were grinding my caraway seeds and used 1/2 mozzarella and 1/2 grated swiss in the chaffle. Get a good jar of crispy sauerkraut.
Grinding the caraway is something I haven't tried. More even flavor through the batter instead of hitting a whole seed. The Swiss in the chaffle makes sense too, since it's already in the sandwich.
Fantastic Recipes. We’ve been doing KETO since October and your videos and recipes are a regular part of our diets. We used this recipe as burger buns. We used Cheddar Cheese too.
Cheddar as burger buns, yes. The melt is different but honestly might be better for that use.