They are going to make a birthday cake but the turtle is too slow for his helper. His helper takes the recipe and goes to create his own.
Oni Press and Edelweiss let me read this book for review (thank you). It has been published and you can get a copy now.
The helper has the recipe but no ingredients. He sees what he can find and makes a cake. (I'd never eat his!) He share it with the other animals, but they don't like it.
Then the turtle arrives with a real cake. The animals attack it!
It all turns out well in the end, but the turtle could use a new helper...