Creating Keto Big Mac Smash Burgers is simple and straightforward. Just follow these easy steps:

1. Preheat your skillet: Heat a cast-iron skillet or a grill pan over medium-high heat.
2. Prepare the beef: In a mixing bowl, combine the ground beef with onion powder, garlic powder, paprika, salt, and pepper. Mix until just combined; be careful not to overwork the meat.
3. Form patties: Divide the mixture into four equal balls. These should be around 4 ounces each.
4. Smash the burgers: Once your skillet is hot, add olive oil. Place the beef balls in the skillet, then use a spatula to smash each ball down to about ¾ inch thick. Cook for about 3-4 minutes.
5. Add cheese: Flip the patties and immediately place a slice of cheddar cheese on top of each one. Cook for another 2-3 minutes or until the cheese is melted and the burgers are cooked to your desired doneness.
6. Make the sauce: In a small bowl, mix together mayonnaise, sugar-free ketchup, yellow mustard, and chopped pickles to create your special sauce.
7. Prepare the toppings: While the burgers cook, wash and slice the lettuce and tomato.
8. Assemble the burgers: On a plate, layer the burger patty with melted cheese, a generous spoonful of special sauce, lettuce, tomato slices, and a few more pickles if you like.
9. Final touches: If desired, sprinkle some sesame seeds on top to mimic the classic Big Mac flavor.

Now you have beautifully crafted Keto Big Mac Smash Burgers ready to enjoy!