This is a great snack. If you use your own sauce and low or fat-free cheese, it's pretty easy on the diet as well.
Preheat broiler. Heat a cast iron skillet over medium heat. Add 1teaspoon olive oil to skillet and wipe out with a paper towel. Add large flour tottilla (large bubble side up) to skillet.
Add toppings sparingly and cook over medium heat until cheese is melting and underside of tortilla is browning.