An even easier icing: mix orange and lemon juice, a tablespoon of each, to 2 cups of powdered sugar. Stir it until all the lumps dissolve. Very simple but it is delicious on muffins. read more
Meanwhile, prepare the icing by beating together the cream cheese, butter, vanilla, and confectioners' sugar until fluffy. Frost the cooled muffins and chill until ready to serve. read more