Preheat the oven to 425°F (200°C). Prepare a muffin pan with nonstick cooking spray.

Roll out the pizza dough on a lightly floured surface.

Using a large biscuit cutter,cut the dough into 3 to 4 inch rounds. Put one circle of dough into each well of the muffin pan, pressing the middle down slightly..

Place one pepperoni onto each dough circle.

Then, drop about 1 tablespoon of mozzarella cheese in the center over each pepperoni.

Top the cheese with about 2 teaspoons of pizza sauce and then two additional slices of pepperoni.

Finish the pizza puffs by topping each with additional mozzarella cheese.

Bake for 12-15 minutes, or until golden brown.

Meanwhile, in a small bowl, combine the melted butter, garlic powder, and Italian seasoning.

When the pizza puffs are done, brush the butter mixture over each while they are still in the muffin tin.

Carefully remove the pizza puffs from the muffin tin. Serve warm.