Knitted Cakes by Susan Penny is a small book with patterns to knit twenty different cakes. Many of the cakes are a little odd looking and I am not sure I would want to make them. However the iced doughnuts are great and I have made two of them!
The instructions were clear and the doughnuts were quick to make. I am not sure that this book would be very easy for a beginner to use, but for a more experience knitted you could easily create a cake stand full of knitted treats.