This flavorful tart is made with a layer of pesto, sliced tomatoes, and grated cheese. The puff pastry is flaky and buttery, while the filling is fresh and tangy. This tart is perfect as an appetizer or a light lunch. To make it, simply roll out the puff pastry, spread the pesto on top, layer the sliced tomatoes, sprinkle with grated cheese, and bake until golden brown and crispy.