01 - Set a large cast iron skillet or griddle over medium-high heat and allow it to fully preheat.
02 - Divide the ground beef evenly into 8 balls, each weighing approximately 2 ounces. Shape loosely and set aside.
03 - Lay each tortilla flat and place one beef ball at the center. Using your palm or a spatula, flatten the beef evenly across most of the tortilla surface.
04 - Place the tortilla with the beef facing down onto the hot skillet. Firmly press the beef into a thin layer using a wide flat spatula. Sprinkle with a pinch of salt and black pepper.
05 - Cook for 2 to 3 minutes until the beef is deeply browned and crisp on the edges. Flip each portion so the tortilla is now in contact with the skillet. Immediately place a half-slice of cheddar cheese on top of the cooked beef.
06 - Cook for an additional minute to melt the cheese and lightly toast the tortilla. Remove from the skillet once the tortilla is golden and the cheese is melted.
07 - Continue cooking in batches until all tortilla-burger shells are complete, optionally adding more butter as needed for toasting.
08 - Layer each taco with shredded lettuce, sliced red onion, tomato, pickles, and your choice of burger sauce, ketchup, and mustard. Fold and serve immediately while hot.