Pour almond milk into small saucepan on stove top and heat slowly over low heat.
Whisk in cocoa powder and cinnamon until smooth.
Hot chocolate is done when you just barely notice small bubbling around the edges of the saucepan and hot chocolate becomes frothy.
Ladle out hot chocolate into mugs. Add coffee liqueur if using. Garnish with whipped cream (again, if using - this is so customizable!) and a shake of cinnamon.