French Dip Chaffle Sandwich Keto Recipe (Open-Faced)

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This Open Faced French Dip Chaffle Sandwich Keto Recipe is mouthwateringly delicious! It’s the perfect way to enjoy a favorite sandwich without all the carbs. You’ll love the layers of flavor with a crispy chaffle, and tender roast beef smothered in melted cheese.

keto French dip chaffle bread sandwich plated

French Dip Chaffle Sandwich Keto Recipe

One way to make following the ketogenic diet easier is to explore different recipes so that you don’t get bored. Now that chaffles have hit the keto world like a storm, it has opened many new food options. As I have brainstormed chaffle recipes this week, I thought about one of my favorite sandwiches that I have missed since I started to eat keto. I knew there had to be a way to make a Low Carb French Dip Sandwich using chaffles for bread. I was right! This French Dip Chaffle Sandwich keto recipe turned out fantastic.

What is a Chaffle Sandwich Recipe?

Perhaps you’ve not heard of the chaffles sensation that went viral overnight? If so, the basic recipe is eggs and cheese made into a crunchy cheese waffle with the Dash Mini Waffle Maker. You can also use a regular waffle iron, but the amount of batter and cooking time may need to be adjusted. Since it was first introduced, the keto world has gone crazy making chaffles of every variety you could imagine both sweet and savory, some are even chaffles without cheese. This recipe is a twist of the standard chaffle recipe that I find a bit crispier, and it doesn’t taste like eggs.

What is a French Dip Chaffle Sandwich?

Traditional French Dip sandwiches consist of thinly sliced roast beef, and melted swiss cheese served on a white sub roll with au jus on the side for dipping. While this sandwich isn’t exactly a traditional French Dip recipe, it is a fantastic and easy to make a keto-friendly alternative. Instead of using a carb-laden white sub roll, I substituted a chaffle keto bread instead.

What Beef Did You Use in this Chaffle Sandwich Keto Recipe?

I am a fan of leftovers. With a family of six and a homeschool mom, we eat at home a lot. So that I am not always in the kitchen, I often make extra at dinner so that we have lunch covered for at least the next day. With that in mind, we love slow cooker Keto Pot Roast and enjoy it at least once or twice a month. It’s always nice to repurpose leftovers so that we don’t feel like we aren’t eating the same food the next day. Turning leftover pot roast into an open-faced French Dip Chaffle Sandwich Keto recipe made for an incredibly delicious and filling lunch.

chaffle sandwich keto recipe on a baking sheet

First, make two chaffles by following the recipe card at the bottom of this post. I used a combination of mozzarella and cheddar cheeses so that the cheddar wouldn’t overwhelm the roast beef and melted cheese in this chaffle sandwich keto recipe.

roast beef on top of chaffle bread

Before adding the pot roast on top of the chaffle bread, I made sure to drain it a bit so that the gravy/broth didn’t make the chaffle soggy.


Keto Chaffle with roast beef and cheese on top for a keto French dip open faced sandwich

While a traditional French Dip sandwich uses swiss cheese, I only had provolone on hand and loved the substitution.


French dip low carb sandwich out of the oven with melted cheese

I decided to make this French Dip Chaffle Sandwich Keto recipe open-faced as it is incredibly hearty and filling. Indeed, comfort food at it’s best.

How to Make an Open-Faced French Dip Chaffle Sandwich Keto Recipe:

  1. Follow the keto chaffle recipe below in the recipe card
  2. Preheat oven to 425 degrees. Add 1/3 cup Keto Roast Beef to the top of each chaffle for an open-faced sandwich (I made sure to drain excess broth)
  3. After you add beef, place a slice of deli cheese or shredded cheese on top. (Swiss cheese or Provolone work great)
  4. Place chaffles with beef and cheese in the oven on the top rack to melt the cheese
  5. Serve with a small bowl of beef broth on the side for dipping.

low carb French dip chaffle bread plated with beef broth in a small bowl

Yum! This was such a fun way to enjoy leftover pot roast and a lovely variation of the traditional chaffle recipe.

Variations to this Recipe:

  • Substitute 1 TB almond flour instead of 1 tsp coconut flour
  • Experiment with different kinds of cheeses
  • Use this recipe to make chaffle breakfast sandwiches instead and use bacon, sausage, eggs, etc
  • Sub different kinds of meat to create different kinds of chaffle sandwichs

bite of French dip chaffle bread being dipped in beef broth on a fork for

I poured a little beef broth in a small bowl for dipping then warmed it up a bit. It was a fantastic accompaniment to this mouthwateringly delicious keto chaffle sandwich.

Can I Make This Easy Keto Recipe Ahead of Time?

You could certainly make Chaffle sandwich keto recipe ahead of time as well as the pot roast. But, I would suggest not rewarming the chaffle sandwich bread in the microwave as it would lose its crispness from steam. Instead, wrap chaffles in aluminum foil and rewarm in the oven or pop in the air fryer or toaster instead.

More Keto Chaffle Recipes:

Tip: Make sure to check out this list of Ultimate Tips for Best Keto Chaffle Recipes. 

How to Make Open-Faced French Dip Chaffle Sandwich Keto Recipe:

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Open-Faced French Dip Chaffle Sandwich Keto Recipe

Open-Faced French Dip Chaffle Sandwich Keto Recipe is delicious and satisfying with a crispy chaffle, tender roast beef, melted cheese, and dipping sauce.
Prep Time5 mins
Cook Time12 mins
Course: Appetizer, Dinner, Main Course
Cuisine: American, casual
Keyword: Chaffle Sandwich Keto Recipe
Servings: 2
Calories: 118kcal
Author: Kasey Trenum


  • 1 egg white
  • 1/4 cup mozzarella cheese, shredded (packed)
  • 1/4 cup sharp cheddar cheese, shredded (packed)
  • 3/4 tsp water
  • 1 tsp coconut flour
  • 1/4 tsp baking powder
  • pinch of salt


  • Preheat oven to 425 degrees. Plug the Dash Mini Waffle Maker in the wall and grease lightly once it is hot.
  • Combine all of the ingredients in a bowl and stir to combine.
  • Spoon out 1/2 of the batter on the waffle maker and close lid. Set a timer for 4 minutes and do not lift the lid until the cooking time is complete. Lifting beforehand can cause the Chaffle keto sandwich recipe to separate and stick to the waffle iron. You have to let it cook the entire 4 minutes before lifting the lid.
  • Remove the chaffle from the waffle iron and set aside. Repeat the same steps above with the rest of the chaffle batter.
  • Cover a cookie sheet with parchment paper and place chaffles a few inches apart.
  • Add 1/4 to 1/3 cup of the slow cooker keto roast beef from the following recipe. Make sure to drain the excess broth/gravy before adding to the top of the chaffle. (slow cooker Keto Pot Roast recipe here or Instant Pot Keto Pot Roast recipe here)
  • Add a slice of deli cheese or shredded cheese on top. Swiss and provolone are both great options.
  • Place on the top rack of the oven for 5 minutes so that the cheese can melt. If you'd like the cheese to bubble and begin to brown, turn oven to broil for 1 min. (The swiss cheese may not brown)
  • Enjoy open-faced with a small bowl of beef broth for dipping.


The nutritional information provided is only for the chaffles sandwich keto recipe. It does not include the beef or added cheese on top of the sandwich. That info will vary depending on the cut of beef you use and type of cheese. 


Serving: 1sandwich | Calories: 118kcal | Carbohydrates: 2g | Protein: 9g | Fat: 8g | Fiber: 1g
Tried this recipe?Mention @kaseytrenumblogger or tag #kaseytrenumblogger!

keto French dip chaffle sandwich collage



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