Prepare the ingredients for the tortilla whopper.
Thinly slice lettuce, tomato, and onion.
Grill the beef patty in a frying pan and season with salt and pepper.
Lightly toast the tortilla in a pan.
Place lettuce, beef patty, tomato, and onion on the toasted tortilla.
Add cheese and your preferred sauce.
Fold the tortilla around the fillings to shape it like a whopper.