Preheat oven to 375ºF. Butter a 9-inch pie dish. Make the pastry: In a bowl use a fork to combine 1 cup flour, 1/3 cup sugar, 3/4 tsp baking powder, 1/2 tsp salt, 1 large egg and 4 Tbsp softened butter. When dough comes together, divide it into 2 equal parts. Form 3 balls out of each part, making 6 total balls. Set bowl aside.