We're going to use organic powdered sugar for this frosting. (fedandfit.com)
If you want to use a butter based frosting, I would recommend making a classic buttercream frosting made with organic powdered sugar. (easygfrecipes.com)
* If you don't want to make your own powdered sugar, you can use 1/3 cup store bought organic powdered sugar in place of the maple sugar and arrowroot. (paleorunningmomma.com)