Hot Buttered Rum Mix 1 cup unsalted butter, softened 1 lb package powdered sugar, sifted 1 lb brown sugar 1 qt vanilla ice cream, softened In a large bowl beat the butter and the sugars together until smooth. Add the softened ice cream and mix until creamy and well blended. Place this mixture in a freezer container with a tight fitting lid, and store in the freezer for up to 1 month. To serve: Place heaping 2 tbs of the frozen mix in a coffee mug. Add 1 to 2 tbs dark rum. Add 3/4 cup boiling water and stir until the mixture is melted. Serve.