Bottom of the Cereal Box Cookies ~What to do with nearly empty cereal boxes and an hour with your kids? Teach them how to follow this simple recipe that uses leftover cereals to make creative new cookies! Here’s a fun way for kids to learn about cleverly using up food and making the best use of favorite cereals you have on hand! These colorful cookies are incredibly easy to make because they start with a pouch of cookie mix and can be customized with whatever cereals you already have on hand.