In a large bowl, combine the flour, sugar, baking powder and salt; cut in butter. 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; set aside.
In a small bowl, beat egg whites on medium speed until soft peaks form. Gradually beat in sugar, 1 tablespoon at a time, until stiff peaks form. Fold in raspberries. Spoon over the crust.
Bake at 350° for 30-35 minutes or until the meringue is golden brown. Cool completely on a wire rack. Refrigerate leftovers.