To prepare a summer fruit crostata recipe, first you need to gather your ingredients. You will need: 1 pound of ripe, unpeeled kiwi, 1 cup of sugar, 2 tablespoons of cinnamon, and 1 tablespoon of vanilla. Preheat the oven to 375 degrees F. Line the bottom and sides of an 8 x8-inch baking dish with foil. Pour the fruit mixture into the dish and bake for 30 to 40 minutes. Remove the foil and set aside to cool. In the meantime, prepare the ricotta cheese. Cut the cheese into small cubes and add to the pie crust. Bake for 20 to 25 minutes or until the crust is golden and the filling is bubbly. Serve warm or at room temperature.