Microwave Fudge
["18 oz. semi-sweet chocolate chips", "2 tsp. vanilla", "1/3 c. confectioners sugar", "1 can sweetened condensed milk (14 oz.)"]
["Grease an 8-inch square pan.", "Microwave chocolate chips and condensed milk uncovered in a 2 quart bowl on High for 2 minutes. Stir until smooth.", "Stir in sugar and vanilla.", "Pour into pan. Chill until firm.", "Cut into squares.", "(Nuts are optional.)"]
["semi-sweet chocolate chips", "vanilla", "confectioners sugar", "condensed milk"]