Peanut Butter Fudge
["2 sticks margarine", "12 oz. peanut butter", "1 lb. box powdered sugar", "1 Tbsp. vanilla"]
["Melt margarine and peanut butter.", "Remove from heat.", "Add sugar and vanilla.", "Pour into buttered pan for cooling."]
["margarine", "peanut butter", "powdered sugar", "vanilla"]