2 (12 oz.) pkg. chocolate chips
1 can condensed milk
1 tsp. vanilla
1 c. chopped nuts
1/4 stick butter

Mix chocolate, milk and vanilla. Cook on high 3 minutes. Stir until mixed evenly. Lightly grease 9x13 inch pan, line with wax paper (leaving enough hanging over sides to lift fudge out). Refrigerate.