Combine all ingredients in a medium sized pot on medium heat. Stir with a whisk till chocolate is melted and all ingredients are blended well. When milk is steaming remove from heat. Pour into mugs and top with vanilla whipped cream.
Whipping Cream:
Place cream in large bowl and whisk by hand or use mixer till cream is slightly thick. Add vanilla and sugar. Continue beating till desired consistency.
Notes
Note: everyone's taste is different when it comes to hot chocolate, so feel free to play with the ratio of dark to milk chocolate to suit your taste.