This recipe comes to us from Phyllis Chinn.
¼ cup potato flour
¼ cup rice flour
½ cup white sugar
3/8 cup stick margarine
Preheat oven to 350. Grease cookie sheet. mix dry ingredients. Beat egg. mix egg and margarine. mix in with dry ingredients (may have to use hands). With dough, form cylinder-shaped balls and put on sheet. Flatten with a fork dipped in cold water. Bake at 350 for 12-15 minutes. Once cooled, put frosting between the smooth halves of the cookies, sandwich two together and voila!