Here's the next cake monster from the Menagerie. Meet Monster Number 80,
Upside-down cake:
Oops, wrong side up.

There, that's better.
So why exactly is it called upside-down cake? It's because the cake is prepared in a pan, then flipped upside down when served. That's why the fruit "topping" in the photo looks so flat; it was at the bottom of the pan while it was being baked.