Heat a cast iron skillet or heavy griddle over medium-high heat for 2 to 3 minutes until the surface is fully hot. A drop of water should evaporate on contact within one second.

Divide the ground beef into 4 equal portions. Press one portion directly onto one half of each flour tortilla, spreading it flat and thin to about a quarter inch thickness. Season generously with salt, pepper, and garlic powder.

Place the tortilla beef-side down onto the hot skillet. Press firmly with a wide spatula for the first 30 seconds to maximize pan contact. Cook for 2 to 3 minutes until the beef is deeply browned and cooked through. The edges will turn gray before the center finishes.

Carefully flip the entire tortilla. Immediately scatter the shredded cheese over the hot cooked beef. Fold the empty tortilla half over the cheese to close the quesadilla and press gently.

Cook for about 1 minute per side until both tortilla surfaces are golden and crispy and the cheese is fully melted. Slice into wedges and serve immediately with pickles, diced onion, and burger sauce.