Prepare the butter. In a medium bowl, beat Agave In The Raw® with butter until smooth. Beat in cream, cinnamon, ginger, vanilla, and nutmeg until very smooth and combined. Beat in coconut milk. Use immediately or refrigerate up to 2 weeks. Before using, let come to room temperature and beat well to re-combine.
For the whipped cream, in a medium bowl beat cream on medium-high until softly whipped.
For each drink, place 1½ tablespoons batter in an 8-ounce mug. Add rum and enough hot water to fill the glass. Stir well, top with a spoonful of heavy cream, and sprinkle with cinnamon.