You will need: a medium saucepan, a whisk, and the ability to do A LOT of stirring.
Over medium low heat add heavy cream. Constantly stir until cream begins to steam. 1 cup heavy whipping cream
Sprinkle in sweetened cocoa powder, cinnamon, and chili powder and whisk some more. 1 tablespoon sweetened cocoa powder, ⅓ teaspoon cinnamon, ½ teaspoon Chili Powder
Add the brown sugar and stir until sugar is completely dissolved. ⅓ cup brown sugar
Slowly add chopped Mexican chocolate one tablespoon at a time and whisk until chocolate is completely dissolved. 4-6 tablespoons chocolate
Keep stirring until chocolate is smooth.
Add Cinnabon Cinnamon Liqueur and wait until mixture begins to steam again. 2 oz. Cinnamon Liqueur
Do a taste test and add more chocolate or spices depending on your personal taste (see note below). 1 tablespoon sweetened cocoa powder