Microwave Fudge
["3 c. semi-sweet or milk chocolate chips", "1/4 c. margarine or butter", "1 (14 oz.) can condensed milk", "1 c. chopped walnuts"]
["Place all ingredients except nuts in large bowl.", "Microwave at Medium (50%) until chips are melted, 3 to 5 minutes, stirring once or twice during cooking.", "Stir in nuts.", "Pour into well-greased square baking dish, 8 x 8-inches.", "Refrigerate until set."]
["semi-sweet", "margarine", "condensed milk", "walnuts"]