Preheat the oven to 400°F, and line a large baking sheet with parchment paper. Set aside.

Lightly sprinkle the flour on a countertop. Use a rolling pin to roll out the puff pastry dough until it forms an approximate 12×16-inch rectangle.

Transfer the pastry to the prepared baking sheet. Bake for 10 minutes or until the pastry begins to puff up and turn light golden brown.

Remove the puff pastry from the oven, and gently press down the center while leaving the outer edges puffed up to form the crust.

Working quickly, spread the pizza sauce over the pastry, using as much as you like and leaving a ½-inch to 1-inch border around the edges.

Sprinkle the mozzarella cheese evenly over the sauce, then add the pepperoni.

Bake for an additional 15 to 20 minutes or until the cheese melts and the crust is deep golden brown.

Let the pizza cool for 5 minutes before slicing. Serve with freshly grated parmesan cheese, chili flakes, and fresh basil if desired.