Pie Crust for Cooked Fillings

1 cup flour
1/2 cup (1 stick) butter or margarine
1/4 cup confectioners' sugar
1/3 cup chopped walnuts

With hands, mix all ingredients to soft dough. Press into a 9-inch pie pan, but not on rim. Bake 15 minutes or until lightly brown at 400 degrees F. Cool. Pour in filling.