Heat milk and eggnog together in a saucepan over medium-low heat until heated through, about 5 minutes. Stir in chocolate and mint-chocolate baking pieces; cook until chocolate is melted and smooth, 5 to 10 more minutes. Pour into 2 mugs.
Tips & Tricks
Old-Fashioned Chocolate Fudge
See how to make simple old-fashioned chocolate fudge.
Chocolate Crinkles II
See how to make chocolate cookies coated in confectioners' sugar.