How many servings does this recipe make?

This recipe makes 4 servings. You can adjust the portion size directly on this page.

What ingredients do I need for Zucchini Gratin?

You need 12 ingredients. The key ingredients include: 1 Tablespoon Olive Oil, 3 cloves Garlic, Minced, 1 whole Medium Onion, Chopped, 2 whole Roma Tomatoes, Chopped, and more.

Is Zucchini Gratin suitable as vegetarian?

Yes, Zucchini Gratin falls under the Vegetarian category and is a great choice for this type of meal.

How do I store leftover Zucchini Gratin?

Store leftovers in an airtight container in the refrigerator for up to 3–4 days. Reheat gently before serving.

Zucchini Gratin Recipe

Name: Zucchini Gratin
Prep time: 15 min
Cook time: 30 min
Total time: 45 min
Yield: 4 servings
Ingredients: 1 Tablespoon Olive Oil; 3 cloves Garlic, Minced; 1 whole Medium Onion, Chopped; 2 whole Roma Tomatoes, Chopped; 3 whole Medium Zucchini, Sliced And Halved; 1 teaspoon Ground Thyme; 1 teaspoon Salt; 2 Tablespoons Flour; 2 whole Eggs; 1/2 cups Half-and-half; 1/4 cups Shredded Cheddar; 1/4 cups Grated Parmesan

Try this homemade Zucchini Gratin recipe the whole family will love. Made with Olive Oil, Garlic, Onion and Tomatoes. Easy step-by-step instructions inc…

This Zucchini Gratin relies on simple, everyday ingredients such as olive oil, garlic, minced, whole medium onion, chopped and whole roma tomatoes, chopped. It comes together quickly and makes 4 servings, at about 224 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

Serves 4 Vegetarian

Tips for the best results

Read through all the steps once before you start and measure out your ingredients first — it makes everything go more smoothly.
Taste as you go and adjust the seasoning before serving.
Avoid overcrowding the pan — cook in batches if needed for the best texture.
Let the dish rest for a few minutes before serving so the flavors settle.
Store leftovers in an airtight container in the fridge and enjoy within a few days.

Variations & substitutions

A good 1:1 gluten-free flour blend works well if you need a gluten-free version.

No specific allergen information. Please check the ingredient list for possible allergens.

My Personal Notes

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Zucchini Gratin

Tips for the best results

Variations & substitutions

My Personal Notes

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