Gather all ingredients. Preheat the oven to 375 degrees F (190 degrees C).
Arrange the English muffin halves cut-side up on a baking sheet.
Spread pizza sauce evenly on top of each one.
Sprinkle with mozzarella cheese and top with pepperoni slices.
Bake in the preheated oven until cheese is melted and browned on the edges, about 10 minutes.
