For each cup, in a double boiler combine the milk chocolate,butter and vanilla. Stir together until completely melted and smooth.Then add the half and half or cream slowly, incorporating it gradually as it heats; do not boil. Serve over a handful of minature marshmallows and garnish with a dash of nutmeg. Makes 1 serving. Source: The Frugal Gourmet Per serving: 350 Calories; 32g Fat (80% calories from fat); 7g Protein; 11g Carbohydrate; 100mg Cholesterol; 137mg Sodium Recipe by: The Frugal Gourmet From The Chocolate Archives, Dec 1997, http://www.choco.com