These quesadillas can also be cooked on the stove. Heat 12-inch nonstick skillet over medium heat. Assemble one quesadilla in the skillet. Cook 2 to 3 minutes on each side until tortillas are golden brown. Repeat to make second quesadilla.
To keep quesadillas warm, place them on an ungreased cookie sheet in a 250° oven until ready to serve.
Any of your favorite pizza toppings can be used on these quesadillas. Add a few sliced red bell peppers, green onions or ripe olives.