I have an excellent zucchini, yellow squash and asparagus recipe that I got from Minimalistbaker.com. You can make it without the asparagus and its still great.
https://minimalistbaker.com/vegan-zucchini-gratin/
Here are all the recipes that showed up on a search for "zucchini"
https://minimalistbaker.com/?s=zucchini