Peanut Butter Fudge

Another one of mom's fave recipes. She usually makes this around Christmas time. 1 1/2 cups sugar 1/2 cup milk 2 Tbsp margarine 2 Tbsp peanut butter(add more to taste if desired) Combine sugar, margarine, and milk in heavy pan. Cook till soft ball stage on candy thermometer or when a soft ball forms in cold water. Stir in peanut butter and margarine. Hand beat until starts to thicken. Pour into buttered pan. Sets up quickly.