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 Oven-Roasted Ratatouille?

You need 14 ingredients. The key ingredients include: 2 medium Japanese eggplants, cubed, 1 medium zucchini, cubed, 1 medium yellow squash, cubed, 1 large red onion, chopped in large chunks, and more.

Is Oven-Roasted Ratatouille suitable as vegetarian?

Yes, Oven-Roasted Ratatouille falls under the Vegetarian category and is a great choice for this type of meal.

How do I store leftover Oven-Roasted Ratatouille?

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

Oven-Roasted Ratatouille Recipe

Name: Oven-Roasted Ratatouille
Prep time: 15 min
Cook time: 30 min
Total time: 45 min
Yield: 4 servings
Ingredients: 2 medium Japanese eggplants, cubed; 1 medium zucchini, cubed; 1 medium yellow squash, cubed; 1 large red onion, chopped in large chunks; 1 red bell pepper, cut in chunks; 1 green bell pepper, cut in chunks; 1 pint grape tomatoes; 1/4 cup olive oil; 4 garlic cloves, minced; 2 tablespoons fresh rosemary, minced; 2 tablespoons fresh parsley, minced; 1 teaspoon fresh thyme leave; 1 teaspoon kosher salt; 3/4 teaspoon black pepper

Try this homemade Oven-Roasted Ratatouille recipe the whole family will love. Made with Japanese eggplants, zucchini, yellow squash and red onion. Easy …

This Oven-Roasted Ratatouille relies on simple, everyday ingredients such as medium zucchini, cubed, medium yellow squash, cubed, pint grape tomatoes and olive oil. It comes together quickly and makes 4 servings, at about 339 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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Oven-Roasted Ratatouille

Tips for the best results

Variations & substitutions

My Personal Notes

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