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Ratatouille is a traditional Provençal dish from France that highlights simple vegetables in a flavorful tomato-based sauce. This oven-baked version is easy to prepare, full of fresh herbs, and makes a beautiful centerpiece for your table. It is naturally vegan, gluten-free, and packed with flavor.

oven baked ratatouille in a pan on pink background
basil, red bell pepper, red pepper flakes, carrots, canned chopped tomatoes, onion, garlic, sugar, red wine vinegar, salt, yellow squash, eggplant, tomatoes, zucchini

Here’s What You Need to Make this Ratatouille

Sauce Ingredients

  • Olive oil: Adds richness, helps soften vegetables, and carries flavor.
  • Yellow onion: Provides sweetness and depth to the base sauce.
  • Carrot: Balances acidity from tomatoes with natural sweetness.
  • Red bell pepper: Adds color and a mild sweetness that enhances the sauce.
  • Salt: Draws out moisture, balances flavors, and highlights natural sweetness.
  • Garlic: Brings bold, aromatic flavor.
  • Red pepper flakes: Adds gentle heat and complexity.
  • Canned chopped tomatoes: The heart of the sauce, giving body, acidity, and umami.
  • Sugar: Balances tomato acidity.
  • Fresh basil: Adds freshness, fragrance, and a signature herbal note.
  • Red wine vinegar: Brightens flavors and enhances acidity for balance.

Vegetable Assembly

  • Zucchini: Mild and tender, absorbs sauce flavor well, adds lightness.
  • Yellow squash: Similar to zucchini but slightly sweeter, brings color contrast.
  • Eggplant: Adds heartiness and a meaty texture, making the dish satisfying.
  • Roma tomatoes: Hold shape well when baked, bringing juiciness and umami.
  • Olive oil: Keeps vegetables from drying, enhances caramelization.
  • Fresh basil for garnish: Adds brightness and a final fresh flavor before serving.

How to make this Easy Oven Baked Ratatouille:

  1. Preheat the oven to 375˚F.
  2. Make the sauce: Heat olive oil in a large skillet over medium heat. Add onion, carrot, bell pepper, and salt. Cook for 8 minutes until softened.
  3. Stir in garlic and red pepper flakes. Cook for 2 minutes.
  4. Add canned tomatoes, sugar, and basil. Simmer for 10 minutes, stirring occasionally.
  5. Remove from heat and stir in red wine vinegar. Adjust seasoning with salt and pepper.
  6. For a smoother texture, blend the sauce in a high-speed blender. Spread the sauce evenly in a 10-inch baking dish.
  7. Prepare the vegetables: Using a mandolin or sharp knife, slice zucchini, yellow squash, eggplant, and Roma tomatoes into ⅛-inch slices.
  8. Assemble: Arrange the sliced vegetables in the baking dish, alternating each type for a colorful pattern.
  9. Drizzle with olive oil. Sprinkle with salt and black pepper.
  10. Cover with foil and bake for 30 minutes. Remove foil and bake another 20 minutes until vegetables are tender and lightly browned.
  11. Let cool for 10 minutes before serving. Garnish with fresh basil.

Equipment You’ll Need

oven baked ratatouille in a pan on pink background

Serving Suggestions

  • Pair with a fresh baguette or sourdough bread.
  • Serve over couscous, rice, or quinoa.
  • Add a side salad with a light vinaigrette for a complete meal.

Storage

  • Store leftovers in an airtight container in the refrigerator for up to 4 days.
  • Reheat in the oven at 350˚F for 15 minutes or microwave until warm.
  • Ratatouille can also be frozen for up to 2 months.

Why You’ll Love This Ratatouille Recipe

  • 100% plant-based and gluten-free
  • Packed with vitamins, fiber, and antioxidants
  • Easy step-by-step instructions
  • Great as a main dish or side
  • Perfect for meal prep and leftovers
ratatouille in a pan with spoon scooping

This oven-baked Ratatouille is a perfect way to enjoy fresh vegetables with bold Mediterranean flavors. It looks beautiful on the table and delivers satisfying taste in every bite.

Tips for the Best Ratatouille

  • Serve with crusty bread, rice, or quinoa for a complete meal.
  • Choose vegetables similar in width for even cooking.
  • Use a mandolin for consistent thin slices.
  • Ratatouille tastes even better the next day after the flavors have melded together.

Frequently Asked Questions About Ratatouille

Do I need to peel the vegetables?

No, you don’t need to peel zucchini, squash, or eggplant. Their skins soften during baking, adding color and texture. Just wash them well before slicing.

Can I make Ratatouille ahead of time?

Yes. You can fully bake Ratatouille, let it cool, and store it in the refrigerator for up to 4 days. Reheat in the oven at 350˚F for 15 minutes or until warmed through. The flavors deepen after resting overnight, making it even better the next day.

Can I freeze Ratatouille?

Yes, Ratatouille freezes well. Store it in an airtight container for up to 2 months. Thaw in the refrigerator overnight, then reheat in the oven or microwave.

Can I make Ratatouille without a mandolin?

Yes. A sharp knife works fine. Just aim for even slices about ⅛ inch thick so the vegetables cook evenly.

Can I blend the sauce for a smoother texture?

Yes. Blending the sauce gives a velvety base for the vegetables. If you prefer a rustic texture, leave the sauce chunky. Both methods work.

Can I use dried herbs instead of fresh basil?


Yes, but fresh basil gives the best flavor. If using dried basil, reduce the amount to 1 teaspoon in the sauce. Still garnish with fresh herbs if possible.

More Veggie Heavy Dishes

Make sure you tag us on Instagram @sweetsimplevegan and @consciouschris and hashtag #sweetsimplevegan if you make this recipe. We love to see your photos! 

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oven baked ratatouille in a pan on pink background

Easy Oven-Baked Ratatouille


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  • Author: Sweet Simple Vegan
  • Total Time: 1 hour 10 minutes
  • Yield: 6 Servings
  • Diet: Vegan

Description

Ratatouille is a traditional Provençal dish from France that highlights simple vegetables in a flavorful tomato-based sauce. This oven-baked version is easy to prepare, full of fresh herbs, and makes a beautiful centerpiece for your table. It is naturally vegan, gluten-free, and packed with flavor.


Ingredients

For The Sauce

  • 2 tablespoons olive oil
  • 1 yellow onion, diced
  • 1 medium carrot, diced
  • 1 red bell pepper, diced
  • ½ teaspoon salt
  • 4 cloves garlic, minced
  • ¼ teaspoon red pepper flakes
  • 1 can (14 oz) chopped tomatoes
  • Pinch of sugar
  • ¼ cup fresh basil, chopped
  • 1 tablespoon red wine vinegar

For the Assembly

  • 1 large zucchini
  • 1 large yellow squash
  • 1 eggplant
  • 3 Roma tomatoes
  • 2 tablespoons of olive oil
  • Fresh basil, chopped, for garnish


Instructions

  1. Preheat oven to 375˚F.
  2. Heat olive oil in a large skillet over medium heat. Add onion, carrot, bell pepper, and salt. Cook for 8 minutes or until the veggies have softened.
  3. Stir in garlic and red pepper flakes. Cook for another 2 minutes.
  4. Add chopped tomatoes, sugar, and basil. Simmer for 10 minutes, stirring occasionally.
  5. Remove from heat and stir in red wine vinegar and season with salt and pepper to taste.
  6. For a smooth sauce, blend in a high-speed blender, but you can also leave it chunky without blending. Spread evenly in a 10-inch baking dish.
  7. Slice zucchini, yellow squash, eggplant, and Roma tomatoes into ⅛-inch rounds with a knife or mandolin.
  8. Arrange slices in the dish, alternating vegetables in a spiral or layered pattern.
  9. Drizzle with olive oil and season with salt and black pepper.
  10. Cover with foil and bake 30 minutes. Remove foil and bake another 20 minutes until the vegetables are tender and lightly browned.
  11. Let the dish cool for 10 minutes before serving. Garnish with fresh basil and serve

Notes

  • Choose vegetables similar in width for even layers.
  • Ratatouille tastes even better the next day.
  • Serve with bread, rice, or quinoa for a complete meal.
  • Prep Time: 20 minutes
  • Cook Time: 50 minutes
  • Category: Dinner
  • Method: Oven
  • Cuisine: French

Meet The Bloggers

hey there! we’re jasmine & chris.

Hi, we’re Jasmine and Chris! We share fresh and fun recipes to show you that vegan cooking is easy, approachable and delicious. When weโ€™re not blogging, you will probably find us enjoying live music, tending to our backyard garden or playing with our dogs Berry and Louie

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