Arrange the English muffins in the air fryer with the split side up. Air fry for 3 minutes at 400 degrees Fahrenheit.
Remove the English muffins from the air fryer and spread pizza sauce evenly on top of each one. Sprinkle with mozzarella cheese and top with mini pepperoni slices.
Place back in the air fryer and cook for 4 minutes at 400 degrees Fahrenheit or until the edges of the English muffin are golden and cheese is melted. Depending on the size of your air fryer this may need to be done in smaller batches.
Notes
Fridge: English muffin pizzas are best enjoyed right away, but leftovers can be stored in an airtight container for up to 3 days. Place parchment between layers to keep the pizzas from sticking together.Freezer: Wrap leftover pieces of pizza individually in plastic wrap and store in a freezer bag or airtight container. Thaw in the fridge overnight or reheat from frozen.For the best texture, reheat in the air fryer for 2-3 minutes at 350 degrees Fahrenheit, until hot through. When reheating from frozen, add a couple of minutes. The microwave will give a softer texture and the toaster oven is a good option to reheat, too.