Making Pepperoni Pizza Puffs is straightforward and rewarding. Follow these steps for delicious results:

1. Preheat Oven: Preheat your oven to 400°F (200°C).
2. Prepare Puff Pastry: Thaw the puff pastry sheets according to package instructions. Unfold them on a clean surface.
3. Cut Pastry: Use a sharp knife or pizza cutter to slice the pastry sheets into 3-inch squares.
4. Mix Filling: In a bowl, combine shredded mozzarella cheese, diced pepperoni, Italian seasoning, and garlic powder.
5. Fill Pastry: Place about 1 tablespoon of the mixture in the center of each square.
6. Fold Pastry: Carefully fold each square in half to form a triangle. Press the edges together to seal.
7. Egg Wash: Beat the egg in a small bowl and brush it over the tops of the puffs for a golden finish.
8. Arrange on Baking Sheet: Line a baking sheet with parchment paper and place the puffs on it, leaving space in between.
9. Spray (Optional): Lightly spray the tops of the puffs with olive oil for extra crispiness.
10. Bake: Place the baking sheet in the preheated oven and bake for 15-20 minutes or until golden brown.
11. Cool: Remove from the oven and let the puffs cool for a few minutes before serving.
12. Serve with Marinara: Serve warm with marinara sauce for dipping.

These steps result in mouthwatering Pepperoni Pizza Puffs that are perfect for any occasion!