Browned Butter Icing

¼ cup butter

2 cups confectioners sugar

2 tablespoons heavy cream

1 ½ teaspoons vanilla extract

2 tablespoons hot water

Heat the butter in a saucepan over low heat until golden brown, about 15 minutes. Remove from heat and stir in the confectioners sugar, cream, and vanilla extract. Add water, mixing vigorously until smooth.