Bakery and Cupcake Boxes Canada. In Canada, we have an excellent selection of cupcake boxes and bakery boxes in stock, and ready to ship! In this category you'll find our selection of FDA approved bakery and cupcake boxes and cupcake inserts. Cup cake inserts are available in single cup, 4 cup, 6 cup and 12 cup sizes. Our cupcake inserts are now also available for mini cupcakes! All Bakery Boxes and Cupcake Inserts are 100% recycled and FDA approved and made in Canada. These bakery boxes are sold flat and set up with ease. Because of their food use designation, the are not eligible for return or exchange.