01 - Heat a large cast iron skillet or griddle over medium-high heat until hot.
02 - Divide the ground beef into 8 equal portions, shaping each into a ball.
03 - Place a tortilla on the work surface. Position a beef ball in the center and flatten with your hand or spatula, spreading the beef evenly to cover most of the tortilla.
04 - Place the tortilla and beef assembly meat-side down onto the hot skillet. Firmly press the beef into a thin layer using a flat spatula. Sprinkle with a pinch of salt and pepper.
05 - Cook for 2 to 3 minutes until the beef develops a deep brown crust and crispy edges. Carefully flip so the tortilla side is now against the skillet.
06 - Top the beef with a half slice of cheese. Cook for 1 minute to allow the cheese to melt and the tortilla to toast.
07 - Remove from skillet and repeat the process with remaining portions.
08 - Top each taco with lettuce, onion, tomato, pickles, and a drizzle of burger sauce, ketchup, or mustard as desired. Fold and serve immediately.