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.
07 - Add 1/2 tbsp butter to the skillet. Place quesadillas in the skillet, cooking 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.
09 - Gently open each quesadilla and add lettuce, tomato, onion, pickles, and a spoonful of burger sauce. Close and slice into wedges.
10 - Serve immediately while hot and crispy.