Preheat oven to 425 degrees F.
Slice bagels in half and set cut side up on baking sheet lined with foil.
Spread each bagel half with approximately 2 tablespoons of pizza sauce.
Top each bagel half with approximately 1/4 cup mozzarella shreds. This does not need to be exact - just add however much you would like!
Top cheese with pepperoni, or preferred pizza toppings.
Bake in preheated oven for 10 minutes, until cheese is melted.
Serve and enjoy!