Right consistency, flavour, and appearance of your baked items, everything directly or indirectly depends on the proper cake pan and baking shape. It also helps your baked cookie or cake not to spread unevenly. With cake rings, you can make layers or with mini cake pans, you can make dozens of cookies of identical patterns. There are other intricate designs also, such as a hole in the centre that can make your deep cake bake faster. We think you have got the answer to the purpose of baking shapes.