One Bowl Chocolate Fudge
["2 (8 sq. each) pkg. Baker's semi-sweet chocolate", "1 (14 oz.) can sweetened condensed milk", "2 tsp. vanilla", "1 1/2 c. chopped walnuts (optional)"]
["You can add marshmallows to make it sweeter."]
["chocolate", "condensed milk", "vanilla", "walnuts"]