Preheat oven to 400 degrees F. Line a baking sheet with parchment paper; set aside.
On a lightly floured surface, unfold pastry. Cut into 8 or 9 rounds with a 3-inch biscuit cutter. Place 1 inch apart on the prepared baking sheet. Using a fork, prick each round in several places. Bake about 10 minutes or until puffed.
Sprinkle rounds with Parmesan cheese; top with mozzarella cheese and tomato slices. Sprinkle with salt and pepper.
Bake for 12 to 14 minutes or until pastry is golden brown. Sprinkle tarts with basil. Serve warm. Makes 8 or 9 tarts.