1Stir the flour, sugar, and salt together in a large mixing bowl. Add the butter and use a pastry blender or 2 knives to cut the butter into the flour until it resembles the texture of cornmeal. Pour in the cold buttermilk and stir until the dough just comes together. Turn the dough out onto your work surface and bring it together with your hands, kneading it lightly to form a ball.
2Lightly dust your work surface and a rolling pin with flour and roll the dough out to 1/4 inch thick. Use a 2-inch biscuit cutter (or a cookie cutter or the rim of a glass) to cut the dough into rounds and place on top of the apples.