Blueberry Crostata or in this case "Rustic Tart" is a free-form blueberry pie made with an all-butter pie pastry and fresh blueberries. This recipe will give you enough crust for two medium size tarts. I tend to make one tart at a time, thus this recipe provides enough filling for just one medium size tart. If you're making 1 large tart or 2 medium, double the filling.
This will give you enough dough for two medium size tarts and one round of filling. Freeze half the crust and use it later or double the filling and make two.