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Keto Roast Beef Sandwich

I made the most delightful keto roast beef sandwich ever!  I swear, this tastes better than the high carb bread I used to eat before I went keto!  This sandwich recipe is made with roast beef either leftover from dinner the night before or fresh sliced roast beef from the deli counter.

The trick to this recipe is to make an amazing bread that holds up to this hearty sandwich.  There are two recipes that will hold up nicely.  One is the Wonder bread chaffle recipe and the other is this version of chaffle bread made with cheese.   If you need a keto bread recipe without cheese, try the wonder bread!

We used a mini dash waffle maker but you can use a large waffle maker also.  We prefer the mini dash because it makes the perfect side sandwich bread.

The roast beef we used is thinly sliced deli meat from the deli counter.  I wanna say it’s a cajun spiced roast beef too.  Any kind of roast beef sliced any way will do.  If it’s thick-sliced, you might need to heat up the meat before making a sandwich with it though.  If you are making it this way, this technique will warm the thin-sliced meat just fine.

Roast Beef Chaffle Sandwich

We are in love with the mini dash waffle maker.  I own two of them so I can make multiple at the same time.  I do own a large waffle maker but the bread comes out thicker than with the mini waffle maker.  You can use either though.  The trick to making sure the bread doesn’t stick to the waffle maker is to NOT OPEN the waffle maker for at least 3 to 4 minutes while the chaffle is cooking.  I can’t tell you how many times I’ve seen someone in our Facebook Chaffle group open a waffle maker after only a minute of two and find a gooey mess!  The cheese crust needs time to transform from gooey cheese to a nice crispy crust.  We must practice patience when making our chaffles to make them perfect!  Just set a timer and you should be good to go.  This is what I always use Alexa for.  You will often times find me in my kitchen blasting music on my echo as Alexa helps me with timing!

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Just look how amazing this sandwich is!!

Roast Beef Chaffle Sandwich
Roast Beef Chaffle Sandwich
Roast Beef Chaffle Sandwich
Roast Beef Chaffle Sandwich
Roast Beef Chaffle Sandwich

Roast Beef Chaffle Sandwich recipe

We have perfect the keto roast beef sandwich with just the right amount of seasonings paired with the perfect KETO BREAD!
4.44 from 23 votes
Calories 156


Chaffle bread ingredients

Sandwich ingredients

  • Slice thick cut provolone cheese
  • 1 sliced cheddar cheese
  • 1 tbs mayo
  • 1 teaspoon Dijon mustard



  • Preheat the mini waffle maker
  • In a small bowl, whip the egg.
  • Add the cheese, seasonings, and egg. Mix it until it’s well incorporated.
  • Place half the batter in the mini waffle maker and cook it for 4 minutes.
  • If you want a crunchy bread, add a tsp of shredded cheese to the mini waffle iron for 30 seconds before adding the batter. The extra cheese on the outside creates the best crust!
  • After the first chaffle is complete, add the remaining batter to the mini waffle maker and cook it for 4 minutes.
  • Add the mayo, Dijon mustard, roast beef and cheeses to your sandwich.
  • Extra step worth doing but optional:
  • You care going to make this sandwich just like you would a grilled cheese sandwich. This will melt the cheeses and heat the roast beef.
  • Heat a small frying pan and place a teaspoon of butter in it. Once the butter has melted add the prepared chaffle sandwich.
  • Cook on each side for about 2 to 3 minutes or until the cheese has melted.
  • Enjoy!


These nutrition facts are for the bread only


Serving: 1sandwich | Calories: 156 | Carbohydrates: 3.4g | Protein: 24.4g | Fat: 4.8g | Fiber: 1.2g
Nutrition facts are provided as a courtesy. Have a question about our calculations or why you got a different result? Please read our nutrition policy.
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  1. 5 stars
    This was great! I loved how crunchy it was. I added the extra cheese before the batter. I made a London Broil and sliced it for the beef. Added grilled onion and peppers to be like a Philly Cheesesteak. I’ve added this to my menu rotation.

  2. 2 stars
    There is NO ROAST BEEF listed in recipe. Granddaughter made per recipe (she’s autistic). The adults were disappointed there was no meat. The grilled cheese sandwiches were a hit with the children.

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