Ingredients

2 cups pizza sauce or spaghetti sauce
8 large flour tortillas
3 cups grated cheese (mozzarella, cheddar or combination) 
1/2 lb sliced pepperoni 
1/2 tsp dried oregano
Optional : cubed ham, sliced onions, sliced mushroom, tomatoes, olives, peppers

Directions

1. Spread sauce over one side of all 8 tortillas. Sprinkle 4 tortillas with cheese. Then sprinkle pepperoni, oregano and any of the optional ingredients (in small amounts or quesadillas will fall apart in cooking) on the other 4 tortillas.
2. Flip tortilla with cheese upside down over pepperoni tortilla to form a sandwich.
3. Put nonstick skillet on medium heat. Cook each tortilla 2 to 3 minutes per side, or until cheese has melted and tortilla has browned.
4. Cut into quarters and serve.