Keto French Dip Chaffle Sandwich (Open-Faced)

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This Open-Faced Keto French Dip Sandwich on a Chaffle 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 plated



Keto French Dip Chaffle Sandwich

One way to make following the ketogenic diet more accessible is to explore different recipes, so 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 brainstormed chaffle recipes this week, I thought about one of my favorite sandwiches I have missed since I started eating 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 Open Faced Keto Chaffle Sandwich 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, both sweet and savory; some are even chaffles without the cheese. This recipe is a twist on the standard chaffle recipe that I find a bit crispier and doesn’t taste like eggs.

Tip: You’ll want to check out all my recipes for keto chaffles.

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 fantastic and easy to make a keto-friendly alternative. Instead of using a carb-laden white sub roll, I substituted a keto chaffle for a deiliocus low-carb crispy bread.

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 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. We are turning leftover pot roast into an open-faced low carb French Dip Sandwich 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. You’ll want crunchy bread for this recipe.


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 cheese on hand and loved the substitution. Place it on a baking sheet and bake until the cheese has browned.

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

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

Can I Use a Regular Waffle Maker?

You can, but I have found that the dash waffle maker works best for the crispest chaffles since the grates on the iron are smaller and closer together.

How to Make an Open-Faced Keto French Dip Sandwich

  1. Follow the keto chaffle recipe below on the recipe card
  2. Preheat the 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 meat 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.
  6. Optional: Some enjoy adding horseradish or mayo to their keto roast beef sandwich.

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

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

Variations to this Recipe:

Chaffle Variations:

  • Substitute 1 TB almond flour instead of 1 tsp coconut flour
  • Experiment with different kinds of cheeses
  • Add additional spices to the chaffle, such as onion powder, garlic,

Meat Mixture:

  • Sautee a sliced onion and green bell pepper to add to the keto french dip sandwich
  • Sautee the leftover roast beef in a pan first with fresh minced garlic cloves. Add a splash of Worcestershire sauce and soy sauce for added flavor.

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

I poured a little beef broth into 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 can make chaffles ahead of time. They can be stored in the fridge in an airtight container for up to 5 days or in the freezer for up to 3 months. I suggest not rewarming the chaffle in the microwave as it would lose its crispness from steam. Instead, wrap chaffles in aluminum foil and rewarm in the oven or pop them in the air fryer or toaster.

More Keto Chaffle Recipes:

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

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5 from 1 vote

Open-Faced Keto French Dip Sandwich with a Chaffle

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



  • Preheat the 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 1/2 of the batter on the waffle maker and close the lid. Set a timer for 4 minutes, and do not lift the top until the cooking time is complete. Lifting beforehand can cause the Chaffle keto sandwich recipe to separate and stick to the waffle iron. It is essential to let it cook for the entire 4 minutes before lifting the lid.
  • Remove the chaffle from the waffle iron and set it 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. Drain the excess broth/gravy before adding it 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 the 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 plated collage image



  1. Finally an absolutely delicious keto recipe. Have been using keto for about 8 months. Used Kasey’s pot roast recipe as suggested to make the French dip.

  2. 5 stars
    This recipe is SO good!!!:) I have made it a few times and it really hits the spot when you’re craving french dip.

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