I did a search because I did make "meatballs" from zucchini, but couldn't remember which recipe. I don't think it was the one with ricotta, although that sounds good. Here are links to the threads:

Perusing zucchini recipes (gardenweb.com)

Zucchini season.... (gardenweb.com)

I'm still looking for the one I made, I'll post it if I can find it, but truthfully, I only made it that one time. It was OK, but not something I kept track of, apparently!

Annie

If you google, there are about a million recipes. Most seem to be Italian or Greek. Several sounded very good.