Silky smooth icing is nice, but Brown Sugar Cinnamon Buttercream Frosting Recipe has crunchy little crystals of brown sugar throughout it making it reminiscent of snickerdoodle cookies. Use Brown Sugar Cinnamon Buttercream Buttercream Frosting Recipe on my now-classic Snickerdoodle Cake, white cake, or carrot cake for an indulgent touch! What is it about a cake