Authentic Quesadilla Recipe from Cheese Professor.

Ingredients

• 16 oz. Oaxaca or Chihuahua cheese, grated or chopped
• 2-3 cups of diced, cooked vegetables, beans, or meat
• 4 flour tortillas, 10-inch
• 2 tbsp vegetable oil (more if needed)
• Hot sauce, pice do gallo, chopped cilantro, or sour cream for serving

Directions

1. Preheat the oven to 250°F (to keep the cooked tortillas warm before serving).
2. Combine the cheese and any toppings in a large bowl and toss until combined.
3. Divide the cheese mixture evenly among the four tortillas, spreading the mixture on only half of the tortilla and leaving a small border around the edge. Fold the tortillas in half, making sure that the filling is completely covered by the tortilla.
4. Heat the oil in a 10-inch skillet set over medium heat. When the oil is shimmering, carefully place one of the folded tortillas in the skillet and cook until the bottom is browned, about 2 minutes, moving the tortilla around to promote even cooking and pressing down on the top with your spatula to seal the edges. Flip the tortilla and cook until the second side is browned and the cheese is completely melted. 
5. Remove the cooked quesadilla to a baking sheet and place it in the warm oven while you continue cooking the remaining quesadillas. Repeat with the remaining tortillas, adding more oil as necessary.
6. When all of the quesadillas have been cooked, cut each one in half and serve immediately with your preferred toppings.