Place a medium-sized saucepan on the stovetop on medium heat and pour in the milk, heavy cream, vanilla extract, and sugar if desired.
Heat the mixture until it’s slightly bubbling and add the chocolate in. We cut our chocolate into cubes, but you can feel free to chop it as well.
Mix the mixture constantly with a whisk until it’s creamy and smooth.
Remove the saucepan from the stovetop and pour the mixture into 2 large glasses or 3 small ones. Top with whipped cream or marshmallows and sprinkle cocoa powder on top for the best experience!