Melt the butter over medium heat. Stir in brown sugar and powdered sugar until well combined. Turn off the heat and add in ice cream, cinnamon and nutmeg. Stir until melted and well combined. Pour into freezer safe container and freeze. Good for up to 3 months in the freezer.
Single Serving Drink
Pour 1 to 2 shots of rum into a mug. Add one heaping spoonful of butter mixture. Fill the remainder of the mug with ½ cup of hot or boiling water. Mix until mixture is completely dissolved. Drink up!
Hot Buttered Rum for a Crowd
In a crockpot set on low heat, place ½ of total buttered rum batter. Pour in 1 liter of spiced rum and fill remainder of crockpot up with hot water. Stir to combine. Serve. **This is dependent on the size of your crockpot. Taste as you go and adjust!