In a large saucepan, heat Mayfield DairyPure milk over medium heat until bubbles form around sides of pan. Meanwhile, in a small bowl, beat Mayfield Heavy Whipping Cream until it begins to thicken. Add sugar; beat until soft peaks form. Whisk chocolate chips and milk powder into Mayfield DairyPure milk until chocolate is melted. Remove from heat; whisk in vanilla. Pour into mugs. Spoon whipped cream over the top. Then enjoy!