1In blender, place coffee and ice cubes. Cover; blend on high speed 10 to 20 seconds or until mixture is slushy.
2Add ice cream, milk, 2 tablespoons instant chocolate milk mix and vanilla. Cover; blend on high speed 20 to 30 seconds longer or until well blended. Sweeten to taste with sugar or sugar substitute. Pour into 3 glasses. Top each with whipped topping; sprinkle with instant chocolate milk mix. Serve immediately.