"But Betty Bunny doesn't want patience, she wants chocolate cake! In this funny tribute to chocolate lovers (and picky eaters), Betty Bunny's charming perspective on patience will be recognisable to anyone with a preschooler in their life."
Another book for preschoolers about chocolate cake is Tiberius and the Chocolate Cake by Keith Harvey and while this is not great literature when compared to something like Helen Oxenbury's cake making in It's My Birthday, it depicts a situation all to common to cake making with lots of helpers and the children laugh when they finally work out why the cake is so small.
I'm off to a birthday party today. Wonder if there'll be chocolate cake!