01 - Gently mix ground beef with salt, pepper, garlic powder, and onion powder in a bowl. Divide into 8 equal balls.
02 - Heat a large skillet or griddle over medium-high heat.
03 - Place 2 beef balls at a time onto the hot skillet and smash each flat with a spatula to form thin patties about the size of your tortillas. Cook for 1-2 minutes per side until browned and cooked through. Repeat with remaining beef. Set aside.
04 - Wipe the skillet clean and reduce heat to medium.
05 - For each quesadilla, place a tortilla on a flat surface. Sprinkle 1/4 cup cheddar and 1/8 cup mozzarella on half of the tortilla. Top with a smashburger patty, a few pickles, onions, and a drizzle of ketchup, mustard, and mayonnaise. Add shredded lettuce and extra cheese if desired. Fold tortilla over to close.
06 - Melt a bit of butter in the skillet. Cook each quesadilla for 2-3 minutes per side, pressing gently, until golden and the cheese is melted. Repeat with remaining quesadillas.
07 - Slice in halves or quarters and serve hot.