As I’ve mentioned, I love the variety that can be added to dishes like this one. If you have Summer squash instead of zucchini, that will work, too. Other squash can also be substituted, but if they are of a heartier variety (i.e. acorn or butternut squash), they cooking time may be longer as they have a sturdier exterior.
For the beef, you can swap that out for ground pork, turkey, chicken, or even any leftover protein you may have in the refrigerator.
What ingredients would you put in this fun Summer dish?