Heat 0.5 tbsp olive oil in a skillet, sauté diced onion and ground beef until browned.
Stir in cumin powder, paprika, and salt; cook for 2 minutes and set aside.
Lay a tortilla flat, spread half with cheddar cheese and cooked beef, then fold over.
Heat remaining olive oil in a skillet and cook folded quesadilla for 2 minutes on each side until golden and cheese melts.
Cut into wedges and serve warm.