Bonnie'S Scotch Shortbread
["1 c. sugar", "1 lb. butter (not margarine)", "about 7 c. flour (depending upon how much the butter will take up)"]
["Mix the ingredients.", "Pat into a pie plate or rectangular pan to depth of 1/4-inch to 1/2-inch.", "Prick entire surface with a fork. Bake at 250\u00b0 for 1 hour or until pale brown.", "If baked in pie pan, cut into wedges to serve.", "One-half the recipe fits into a 9 x 13-inch pan.", "If baked in rectangular pan, cut into small rectangular pieces.", "Very rich!"]
["sugar", "butter", "flour"]