The steam program on my entry level Zojirushi is functionally similar to a slow cooker: It keeps the contents (water) at a slow boil for the designated duration. This opens up the possibility of making most crock pot recipe. Avoid the acidic or scratchy (bones esp) ingredients to protect the coating.

Zojirushi's recipes site also has some cake recipes: https://www.zojirushi.com/app/recipe/rice-cookers