4 cups milk
¼ cup brown sugar
¼ cup cocoa powder
1 tablespoon cornstarch
1 teaspoon vanilla extract
Pinch of cinnamon
Whipped cream or marshmallows, optional
In a medium saucepan, combine milk, brown sugar, cocoa powder, and cornstarch.
Whisk over medium heat until the mixture begins to simmer (you will see bubbles forming around the edges of the pan and wisps of steam coming from the milk mixture).
Continue cooking at a simmer for another minute.
Remove from heat; add in vanilla and cinnamon.
Pour into cups and top with whipped cream and/or marshmallows, if desired.