Old Shortbread
["1 lb. butter", "4 c. flour", "1 c. sugar"]
["Melt butter.", "Add flour and sugar; mix well.", "Batter will be stiff.", "Place in 9 x 13-inch glass pan.", "Poke holes with fork once mix is in pan.", "Heat the first 3 minutes on bottom rack of oven, then for 1 hour, in slow 275\u00b0 oven.", "Cut into squares as soon as out of oven."]
["butter", "flour", "sugar"]