Preheat the oven to 400 degrees. Using your favorite pie crust recipe, roll out the dough. Depending on the size of your hand, use a glass, can, cookie cutter or protractor (!) to make circle and place it on a baking sheet lined with parchment or a silicone pad. Fill the circle with a small amount of your favorite filling and top it with another circle. If you prefer half-moon shaped pies, just fill one circle and fold it in half. Crimp the edge to seal tightly. Vent the pie with a fork. Cover the pies and chill them for 5 to 10 minutes. You can also freeze them at this point and bake them later. Before baking, brush the pies with an egg wash and sprinkle them with sugar. Bake for 10 to 15 minutes. Enjoy one of the few times that is ok to eat your food with your hands!
Recipe by People, Places and Pies at https://peopleplacespies.com/presidential-pies-in-rapid-city-south-dakota-pistachio-pie-at-pistachio-pie-bakery/