Foolproof Fudge
["3 (6 oz.) pkg. semi-sweet chocolate morsels", "1 (14 oz.) can Eagle Brand sweetened condensed milk (not evaporated)", "1 1/2 tsp. vanilla extract", "1/2 c. chopped nuts (optional)"]
["In top of double boiler, over boiling water, melt morsels with sweetened condensed milk.", "Remove from heat.", "Stir in remaining ingredients.", "Spread evenly into wax paper-lined 8-inch square pan.", "Chill 2 hours or until set.", "Turn fudge onto cutting board, peel off paper and cut into squares.", "Cover and store at room temperature."]
["semi-sweet chocolate morsels", "condensed milk", "vanilla extract", "nuts"]