These Keto Big Mac Smash Burgers are one of my favorite low-carb comfort meals because they deliver all the classic fast-food flavors without the bun. I love how the thin, crispy-edged burger patties pair perfectly with melty cheese, fresh lettuce, pickles, and a creamy homemade sauce. Every bite tastes savory, tangy, and satisfying while still fitting into a keto lifestyle.

Why You’ll Love This Recipe

I love this recipe because it is quick to prepare and packed with bold flavor. The smash burger method creates crispy edges and juicy centers that taste incredible. I also enjoy how easy it is to customize the toppings and sauce based on what I have at home. These burgers are perfect for weeknight dinners, meal prep, or casual gatherings when I want something hearty without extra carbs.

Ingredients

(Here’s a tip: Check out the full list of ingredients and measurements in the recipe card below.)

For the burgers:

1 1/2 pounds ground beef
Salt, to taste
Black pepper, to taste
1 teaspoon garlic powder
4 slices cheddar cheese
Shredded lettuce
Sliced pickles
Diced onions

For the Big Mac-style sauce:

1/2 cup mayonnaise
2 tablespoons sugar-free ketchup
1 tablespoon mustard
1 tablespoon pickle relish
1 teaspoon white vinegar
1/2 teaspoon paprika
1/2 teaspoon onion powder

Directions

I divide the ground beef into small portions and gently roll them into balls.
I mix the sauce ingredients together in a bowl and refrigerate the sauce while cooking the burgers.
I heat a skillet or griddle over medium-high heat.
I place the beef balls onto the hot skillet and smash them flat with a spatula.
I season the patties with salt, black pepper, and garlic powder.
I cook the burgers for about 2 to 3 minutes per side until crispy around the edges.
I add cheddar cheese on top of the patties during the final minute of cooking.
I layer the burgers with shredded lettuce, pickles, diced onions, and the homemade sauce before serving.

Servings and timing

Servings: 4
Prep Time: 10 minutes
Cook Time: 15 minutes
Total Time: 25 minutes

Variations

I sometimes wrap the burgers in large lettuce leaves instead of serving them open-faced.
I occasionally use pepper jack cheese when I want a spicy twist.
I enjoy topping the burgers with sautéed mushrooms or jalapeños.
I sometimes make mini sliders for parties or snacks.

storage/reheating

I store leftover burger patties in an airtight container in the refrigerator for up to 4 days. When reheating, I warm them in a skillet over medium heat or in the microwave for a short time until heated through. I usually store the toppings and sauce separately to keep everything fresh and crisp.

FAQs

What makes these burgers keto-friendly?

I skip the traditional bun and use low-carb ingredients for the sauce, which keeps the meal keto-friendly.

Can I make the sauce ahead of time?

I often prepare the sauce a day in advance because the flavors become even better after chilling.

What beef works best for smash burgers?

I like using ground beef with a little extra fat, such as 80/20, because it creates juicy burgers with crispy edges.

Can I cook these burgers on an outdoor grill?

I can cook them on a flat-top grill or griddle outdoors for the same crispy smash burger texture.

What sides go well with keto smash burgers?

I enjoy serving them with salad, roasted vegetables, cauliflower fries, or keto-friendly coleslaw.

Conclusion

These Keto Big Mac Smash Burgers are a flavorful and satisfying way to enjoy classic burger flavors while staying low-carb. I love the crispy beef patties, creamy sauce, and fresh toppings that come together in every bite. Whether I make them for a quick dinner or weekend cookout, they always feel indulgent and delicious without breaking my keto routine.

Keto Big Mac Smash Burgers

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These Keto Big Mac Smash Burgers deliver all the classic fast-food flavors in a low-carb, bunless version. Featuring crispy-edged beef patties, melted cheddar cheese, fresh toppings, and a creamy homemade Big Mac-style sauce, they are hearty, flavorful, and keto-friendly.

Author: Mayaa
Prep Time: 10 minutes
Cook Time: 15 minutes
Total Time: 25 minutes
Yield: 4 servings
Category: Main Course
Method: Stovetop
Cuisine: American
Diet: Low Calorie

Ingredients

1 1/2 pounds ground beef
Salt, to taste
Black pepper, to taste
1 teaspoon garlic powder
4 slices cheddar cheese
1 cup shredded lettuce
1/2 cup sliced pickles
1/4 cup diced onions
1/2 cup mayonnaise
2 tablespoons sugar-free ketchup
1 tablespoon mustard
1 tablespoon pickle relish
1 teaspoon white vinegar
1/2 teaspoon paprika
1/2 teaspoon onion powder

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Instructions

Divide the ground beef into equal portions and gently roll them into balls.
In a small bowl, mix together the mayonnaise, sugar-free ketchup, mustard, pickle relish, white vinegar, paprika, and onion powder to make the sauce. Refrigerate until ready to use.
Heat a skillet or griddle over medium-high heat.
Place the beef balls onto the hot skillet and smash them flat using a spatula.
Season the patties with salt, black pepper, and garlic powder.
Cook for 2 to 3 minutes per side until the edges are crispy and browned.
Top each patty with cheddar cheese during the final minute of cooking.
Serve the burgers layered with shredded lettuce, sliced pickles, diced onions, and the homemade sauce.