Never Fail Fudge
7½ oz jar Marshmallow Fluff 2½ cups sugar ¾ tsp salt ½ stick butter or margarine 5 oz evaporated milk ¾ tsp vanilla 12 oz (~2 cups) semi-sweet chocolate pieces ½ cup chopped walnuts (optional) Grease a 9-inch square baking pan; set aside. In large saucepan combine first 5 ingredients. Stir over low heat until blended. [...]