In a small saucepan, add all of your ingredients and stir to combine.
Over medium heat, bring the mixture to a simmer while stirring, about 5 minutes.
Take the saucepan off the heat and pour into your mug.
Decorate with freshly whipped cream and a sprinkle of pumpkin pie spice or cinnamon.
Store any leftovers in an airtight container in the fridge for up to 3 days.
