Of all the buttercream recipes I make, this is everyone’s favorite and I have requests for it regularly. It has a wonderful orange flavor without being overpowering. It’s also not too sweet.
1 cup unsalted butter
1 tablespoon vanilla extract
3 tablespoons Cointreau or any orange flavored liquer
1 teaspoon orange extract
4 cups confectioner’s sugar
beat butter until light; add sugar and mix on low speed until incorporated. Mixture will be very thick. Add the vanilla extract, then the Cointreau and last the orange extract. This is just about the right consistency for frosting a cake. If you want the icing stiffer, add more sugar.