Preheat oven to 425°F. Line a baking sheet with parchment paper or coat with nonstick spray.
Roll out the dough on a lightly floured surface.
17 oz. package puff pastry dough
Using the top of a wine glass (or a biscuit cutter), cut out 9 circles per sheet of puff pastry.
Place the dough circles on the prepared baking sheet.
Using a paring knife, score an inner circle into each puff pastry, about ¼ of an inch in. Use the tip of the knife to prick the center of each circle 2-3 times.
Add a slice of tomato on each circle and then drizzle 3 or 4 drops of balsamic vinegar onto each tomato slice.
5-6 Roma tomatoes, 1 tbsp balsamic vinegar
Top each tomato slice with some chopped basil.
½ cup chopped fresh basil leaves
Add a cube of mozzarella cheese to each tart.
6 oz. fresh whole milk mozzarella
Bake for 12-15 minutes, or until puff pastry is fully cooked and golden brown.
Remove from the oven to a tray and serve.