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Gluten-Free Ratatouille

By the Gluten Free Recipes team ·

This vibrant ratatouille bursts with the fresh, sweet flavors of summer vegetables, slow-cooked to tender perfection. Each bite offers a delightful medley of soft zucchini, tender eggplant, and sweet bell peppers, all bathed in a rich, aromatic tomato sauce infused with garlic and herbs.

Easy Gluten-Free Verified gluten free dairy free
Prep: 5 min Cook: 30 min Total: 35 min Serves: 4

At a glance: This easy salads and sides recipe yields 4 servings in about 35 minutes (5 min prep, 30 min cook). It uses 13 ingredients — including extra virgin olive oil, onion, garlic — and walks through 5 steps. Updated . Browse more salads and sides recipes or return to all gluten-free recipes.

Gluten-Free Ratatouille — salads and sides recipe, serves 4

Cross-Contamination Warning for Gluten-Free Ratatouille: When preparing this salads and sides recipe, commercial broths and stocks are high risk — many contain yeast extract (often barley-derived), wheat starch, or caramel colour from wheat. Use certified GF stock (Pacific Foods Organic GF, Swanson Natural Goodness) or make your own. In a shared kitchen, avoid porous materials — wooden spoons, wooden cutting boards, and scratched non-stick pans can harbor gluten proteins even after washing. Prefer glass, metal, or silicone tools.

Gluten-Free Notes for Gluten-Free Ratatouille: This recipe is naturally gluten-free, relying on fresh vegetables and pantry staples. Always verify that packaged ingredients like crushed tomatoes are certified gluten-free.

Scale Recipe:
4 servings
Ingredient amounts update automatically

Ingredients

  • 2 tbsp extra virgin olive oil
  • 1 large onion, thinly sliced
  • 2 cloves garlic, minced
  • 1 medium eggplant, cut into 1-inch cubes
  • 2 medium zucchini, cut into 1-inch cubes
  • 1 large red bell pepper, seeded and cut into 1-inch pieces
  • 1 large yellow bell pepper, seeded and cut into 1-inch pieces
  • 1 can (28 oz) crushed tomatoes
  • 1 tsp dried thyme
  • 0.5 tsp dried rosemary
  • 0.5 tsp salt, or to taste
  • 0.25 tsp black pepper, or to taste
  • 2 tbsp fresh basil leaves, chopped (for garnish)

Instructions

  1. 1

    Heat the extra virgin olive oil in a large pot or Dutch oven over medium heat until shimmering. Add the thinly sliced onion and sauté for about 5-7 minutes, stirring occasionally, until softened and translucent. Stir in the minced garlic and cook for another minute until fragrant, being careful not to burn it.

  2. 2

    Add the cubed eggplant, zucchini, red bell pepper, and yellow bell pepper to the pot. Stir everything to coat the vegetables in the oil and sauté for about 8-10 minutes, allowing them to soften slightly and develop a hint of color. The vegetables should begin to release their moisture.

  3. 3

    Pour in the crushed tomatoes, then stir in the dried thyme, dried rosemary, salt, and black pepper. Bring the mixture to a gentle simmer, then reduce the heat to low, cover the pot, and let it cook for at least 20-25 minutes. Stir occasionally to prevent sticking and ensure even cooking. The vegetables should become very tender and the sauce should thicken.

  4. 4

    Taste the ratatouille and adjust the salt and pepper as needed. The flavors should be well-melded and the vegetables should be fork-tender. If the sauce seems too thick, you can add a splash of water or vegetable broth to reach your desired consistency.

  5. 5

    Serve the ratatouille hot, garnished with fresh chopped basil leaves. This dish is wonderful on its own, or as a side to grilled meats, fish, or gluten-free grains. It can also be enjoyed at room temperature or chilled.

Nutrition (per serving)

257
Calories
13g
Protein
25g
Carbs
9g
Fat
5g
Fiber
319mg
Sodium

Tips & Notes

  • If substituting olive oil for butter, use about 3/4 the amount (olive oil is 100% fat, butter is ~80%).
  • Grate zucchini then squeeze out excess moisture in a clean towel — too much water makes baked goods dense.
  • Roasted garlic (400°F, 30–40 min in foil) gives a sweet, mellow flavor ideal for soups and sauces.

Learn More

Gluten Free Recipes Team

Celiac-safe recipe development and testing since 2026

Our team develops and tests every recipe to be 100% gluten-free, verifying ingredients, techniques, and cross-contamination risks. We focus on making gluten-free cooking as delicious and accessible as possible. Learn more about us.

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