Open muffins in half and lay on a parchment lined baking sheet.
Spread ½ - 2 tablespoons sauce over each muffin half.
Add 1 tablespoon cheese to each.
Add any toppings you prefer.
Top with the other 1 tablespoon cheese.
Bake in oven for about 10-12 minutes, watching as you go and taking out when just beginning to brown. If you like them crispier then bake until browning on top.
Notes
Mix and match any toppings you want! You can also add in other types of cheese or sauces. See post for more ideas.
Nutrition facts include the basic recipe only, no toppings. True numbers will vary depending on ingredients and brands used.