In a large bowl, combine the flour, sugar, baking powder and salt; cut in butter until mixture resembles coarse crumbs. Combine egg and milk; stir into flour mixture (dough will be sticky). Press onto the bottom and up the sides of a greased 9-in. pie plate.
Bake at 375° for 8-10 minutes or until set. Cool on a wire rack. Fill as desired.
If baking the filling, cover edges with foil during the last 30 minutes to prevent overbrowning if necessary.