Try this homemade Baked Zucchini Gratin recipe the whole family will love. Made with onion, zucchini, oleo and mozzarella. Easy step-by-step instruction…
This Baked Zucchini Gratin relies on simple, everyday ingredients such as med onion, sliced, zucchini, sliced, oleo, 1 stick and mozzarella, 8 oz.. It comes together quickly and makes 4 servings, at about 449 kcal each. The step-by-step instructions below are written to be easy to follow, even on a busy day.
It's versatile enough for an easy weeknight dinner yet satisfying enough for guests at the weekend. Serve it with your favorite sides, and keep any leftovers for a quick meal the next day.
Updated Jun 30, 2026