I take a bar of chocolate (I prefer Hershey's since it always makes creamy hot chocolate) and just melt it in hot milk. It's really that easy!
For the cup I pictured above, I actually didn't have a bar of chocolate left, so I just used milk chocolate chips that have been lying around my house. 2 full handfuls is more than enough for a cup.
I top it off with either marshmallows or whipped cream, along with a dash of cinnamon.
And just like that, you have a perfect chilly weather treat!