3/4 cup packed brown sugar
1/2 cup butter, softened
1/4 teaspoon finely grated fresh orange peel
1/2 teaspoon ground pumpkin pie spice
1. Mix the brown sugar together with the butter and orange peel in a mixing bowl until evenly blended. Use immediately, or cover and refrigerate for up to 1 month.
2. To make 1 serving, place 1 rounded tablespoon of the brown sugar mixture into a mug. Add the rum and boiling water, and stir until the mixture is completely dissolved.