- 1/4 cup butter, melted
- 3 1/2 cups confectioners' sugar, sifted
- 1/4 teaspoon salt
- 5 tablespoons heavy whipping cream
- 1 teaspoon vanilla extract
- 2 1/2 teaspoons rum extract
- 1 pinch ground allspice
- 1 pinch ground nutmeg
- 1 pinch ground cloves
- Whisk butter in a large bowl until fluffy. Gradually add 1 cup of the sifted confectioners' sugar, beating well. Slowly beat in the salt and cream. Gradually beat in the remaining 2 1/2 cups of confectioners' sugar. Continue to beat until the frosting begins to thicken; whisk in the vanilla and rum extracts, allspice, nutmeg, and cloves. Allow to sit for 15 minutes before using.