This frosting is the perfect topping for Carrot Ginger Cupcakes.
Place butter in the bowl of an electric mixer fitted with the paddle attachment, and beat on medium-high speed until fluffy, about 2 minutes. Add cream cheese and confectioners' sugar, beat until well combined and fluffy, about 2 minutes more. Add orange zest, grated ginger, and salt. Beat an additional 5 minutes.