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 Italian Zucchini Casserole?

You need 12 ingredients. The key ingredients include: 3 medium zucchini, sliced (about 6-1/2 cups), 3 tablespoons olive oil, divided, 1 medium onion, sliced, 1 garlic clove, minced, and more.

Is Italian Zucchini Casserole suitable as vegetarian?

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

How do I store leftover Italian Zucchini Casserole?

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

Italian Zucchini Casserole Recipe

Name: Italian Zucchini Casserole
Prep time: 15 min
Cook time: 30 min
Total time: 45 min
Yield: 4 servings
Ingredients: 3 medium zucchini, sliced (about 6-1/2 cups); 3 tablespoons olive oil, divided; 1 medium onion, sliced; 1 garlic clove, minced; 1 can (28 ounces) diced tomatoes, undrained; 1 tablespoon minced fresh basil or 1 teaspoon dried basil; 1-1/2 teaspoons minced fresh oregano or 1/2 teaspoon dried oregano; 1/2 teaspoon garlic salt; 1/4 teaspoon pepper; 1-1/2 cups stuffing mix; 1/2 cup grated Parmesan cheese; 3/4 cup shredded part-skim mozzarella cheese

Try this homemade Italian Zucchini Casserole recipe the whole family will love. Made with zucchini, olive oil, onion and garlic. Easy step-by-step instr…

This Italian Zucchini Casserole relies on simple, everyday ingredients such as olive oil, divided, medium onion, sliced, garlic clove, minced and garlic salt. It comes together quickly and makes 4 servings, at about 354 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

Feel free to swap in similar ingredients you already have on hand and adjust seasoning to taste.

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

My Personal Notes

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Italian Zucchini Casserole

Tips for the best results

Variations & substitutions

My Personal Notes

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