Preheat your oven to 375°F (190°C). Line a baking sheet with parchment paper.
Prepare Puff Pastry:
Roll out the thawed puff pastry slightly on a lightly floured surface. Transfer it to the prepared baking sheet.
Mix Cheese Filling:
In a bowl, combine ricotta, mozzarella, Parmesan, eggs, and chopped basil. Mix until smooth and evenly blended.
Assemble the Pie:
Spoon the cheese mixture onto the center of the puff pastry, leaving a 1-inch border around the edges. Fold the edges over slightly to create a raised crust.
Bake:
