All the flavor of your favorite winter drink baked into a cookie. For the ultimate treat, enjoy warm with a glass of cold milk.
Preheat oven to 350 degrees. In a large bowl or stand mixer, beat together butter, sugar, and eggs until combined. Add flour, hot cocoa mix, salt, baking powder, and vanilla. Mix until well combined. Roll approximately 2 tablespoons of dough into balls. Place on a parchment-lined baking sheet. Bake for 8-10 minutes, then about 1 minute before the cookies are ready to remove from the oven, open and press 3-5 mini marshmallows into the top of each cookie. Allow to bake for 1 minute more. Remove and cool slightly before transferring to a wire baking dish. In a small, microwave-safe bowl, melt chocolate chips and cream together until smooth. Drizzle over cookies. Sprinkle with grated chocolate. Serve and enjoy!