Bake two bundt cakes. Put one on top of the other and frost it with orange frosting. Instant pumpkin cake. I learned this in a cake decorating school decades ago It was three months of classes only for decorating, not learning how to bake etc. I got a certificate to be a licensed cake decorator. LOL Never used it for a job though. Several members opened a bakery and had good success and a few did wedding cakes for caterers. When we were learning how to pipe and decorate, we used styrofoam cake. We could scrip off the mistakes and start over.