Try this homemade Zucchini Au Gratin recipe the whole family will love. Made with butter, zucchini, onion and salt. Easy step-by-step instructions inclu…
This Zucchini Au Gratin relies on simple, everyday ingredients such as butter or margarine, onion, peeled and sliced, salt and tomatoes, peeled and sliced. It comes together quickly and makes 4 servings, at about 409 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