Carrot cake may be eaten plain, but it is commonly either glazed or covered with white icing or cream cheese icing and walnuts, often cut. Often they are decorated with frosting or marzipan made to look like carrots. They are popular in loaf, sheet cake and cupcake form, and (in the United Kingdom as well as North America) can be found pre-packaged at grocery stores, and fresh at bakeries. Some carrot cakes are even layered.