Bring ¾ cup water to a simmer over medium-high heat.
Mix in 1 tbsp. of cocoa , stirring until no lumps remain. Then add milk to a simmer.
Mix in chopped chocolate and date sugar, stirring until smooth and creamy, and chocolate is melted.
Carefully pour into desired mug. Top with marshmallows and add a few Chatfield’s chocolate chips to melt on the bottom of mug. Stack with a cookie or a slice of leftover pie, cake, brownie (or all of the above!) on side of mug.
Dust with extra cocoa powder, if desired. Serve and enjoy!