01 - Preheat a large nonstick skillet or griddle over medium-high heat.
02 - Divide the ground beef into 4 equal portions and shape into loose balls.
03 - Place a ball of ground beef onto one half of each tortilla. Season with salt, pepper, garlic powder, and smoked paprika.
04 - Using a spatula or parchment and a heavy pan, smash each beef ball thinly and evenly onto the tortilla.
05 - Sprinkle a generous amount of shredded cheddar cheese over the smashed beef.
06 - Fold the tortilla over to form a half-moon shape, pressing gently to seal.
07 - Add 1/2 tbsp butter to the skillet. Place quesadillas in the skillet (in batches if needed). Cook 2–3 minutes per side until beef is cooked through and tortilla is golden and crisp, adding more butter as needed.
08 - Remove from skillet and let rest for 1 minute before slicing.
09 - Gently open each quesadilla and add lettuce, tomato, onion, pickles, and a spoonful of burger sauce. Close and slice into wedges.
10 - Serve hot while cheese is melted and tortilla remains crispy.