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Keto Big Mac Smash Burgers

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These Keto Big Mac Smash Burgers capture all the bold, savory flavors of a classic burger while keeping things completely low-carb. Juicy beef patties are smashed to perfection, topped with melted cheese, crisp lettuce, tangy pickles, onions, and a rich, creamy special sauce. It’s the ultimate keto-friendly comfort food that’s quick to prepare, customizable, and ideal for family dinners or meal prep.

  • Total Time: 25 minutes
  • Yield: 4 1x

Ingredients

Scale
  • 1 lb (450 g) ground beef (80/20 blend recommended)
  • Salt and black pepper, to taste
  • 4 slices cheddar cheese (or your preferred keto cheese)
  • 8 large lettuce leaves (iceberg or romaine for wrapping)
  • ¼ cup dill pickles, sliced
  • ¼ cup chopped onions
  • 2 tbsp sugar-free mayonnaise
  • 1 tbsp sugar-free ketchup
  • 1 tsp yellow mustard
  • ½ tsp white vinegar (optional)
  • ½ tsp paprika
  • ½ tsp garlic powder

Instructions

  1. Make the sauce: In a small bowl, combine sugar-free mayonnaise, ketchup, mustard, vinegar, paprika, and garlic powder. Stir until smooth and creamy. Set aside.
  2. Shape the beef: Divide ground beef into 4 to 6 equal portions. Roll into loose balls and season both sides with salt and pepper.
  3. Preheat the skillet: Heat a cast-iron skillet or griddle over medium-high heat. Lightly grease it with a small amount of butter or avocado oil.
  4. Smash the burgers: Place beef balls onto the hot surface. Using a heavy spatula or burger press, firmly press down to flatten each ball into a thin patty. Cook for about 2 minutes, allowing the edges to crisp.
  5. Flip and melt the cheese: Flip each patty, then top immediately with a slice of cheese. Let it melt while the second side cooks for about 1–2 minutes. Remove from the skillet and set aside.
  6. Prepare the lettuce wraps: Rinse and dry the lettuce leaves. Use two per burger for extra stability.
  7. Assemble the burgers: Spread a small amount of sauce on one lettuce leaf, add a cheesy patty, top with pickles and onions, then layer another patty if desired. Add more sauce and cover with another lettuce leaf to complete the wrap.
  8. Serve immediately: Enjoy warm with extra sauce or keto-friendly sides like cauliflower fries or coleslaw.

Notes

Use freshly ground beef for best texture and flavor.

Adjust the sauce to taste — add more mustard for tang or paprika for a smoky flavor.

For a spicier version, mix in a dash of cayenne pepper or diced jalapeños.

These burgers can be stored in the fridge for up to 3 days and reheated easily.

  • Author: Emily
  • Prep Time: 10
  • Cook Time: 15