Beautiful pastries are one of my all-time favorite treats. After all, what's not to love about golden brown flaky-crisp layers, rich & buttery flavor, & whatever fillings your heart desires!? These Heirloom Tomato Tarts are the ultimate savory summer pastry, & they're so easy to make. Simply top store-bought puff pastry with shredded mozzarella, creamy Boursin cheese for extra garlicky-herb flavor, & thinly sliced heirloom tomatoes. Feel free to use a variety of colors & shapes to make your…