Classic Ratatouille with Herbed Tomato Sauce

By AislePrompt Test Kitchen · Reviewed by AislePrompt Editorial · ·

A true French vegetable stew featuring eggplant, zucchini, and tomatoes simmered with herbs for authentic Provençal flavor. This french-inspired vegetarian ready in about 65 minutes blends medium (1 pound) eggplant, medium (1 pound total) zucchini, medium, diced yellow onion into a versatile sauce that lifts everything from grain bowls and roasted vegetables to grilled proteins — a small-batch staple worth keeping in the fridge. Each serving lands at about 240 calories and feeds 4, so a small batch covers several meals across the week without taking over the fridge. Tap "Plan a meal with the AI" below to drop this recipe into your week and send the ingredients straight to Instacart. Nutrition values are approximate, calculated from USDA FoodData Central (fdc.nal.usda.gov) — verify against ingredient labels for any health-driven dietary plan.

★ 3.9 (13 ratings) Prep: 25 min Cook: 40 min Serves 4 French cuisine 240 cal/serving
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Ingredients

Instructions

  1. Step 1: Preheat oven to 375°F (190°C). Cut 1 medium eggplant (1 pound) and 2 medium zucchini (1 pound total) into 1/2-inch thick slices. Arrange in a single layer on a parchment-lined baking sheet and drizzle with 2 tablespoons extra virgin olive oil. Season with 1/2 teaspoon sea salt and roast for 25 minutes until golden and tender.
  2. Step 2: While vegetables roast, heat 1 tablespoon extra virgin olive oil in a saucepan over medium heat. Add 1 diced medium yellow onion and 2 minced garlic cloves, sautéing for 5 minutes until translucent.
  3. Step 3: Add 2 cups diced tomatoes, 2 teaspoons chopped thyme, 1 teaspoon chopped rosemary, and 1/2 teaspoon sea salt. Simmer uncovered for 15 minutes until tomatoes break down into a thick sauce.
  4. Step 4: Layer roasted eggplant and zucchini in a baking dish, spooning half the tomato sauce over them. Top with remaining vegetables and pour the remaining sauce over. Sprinkle with 1/4 cup fresh basil and bake uncovered for 10 minutes until heated through.

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Frequently asked questions

How long does Classic Ratatouille with Herbed Tomato Sauce take to make?

Total time is about 65 minutes (25 min prep + 40 min cook). A small batch typically covers several meals in the week — store as the recipe directs.

How do I store leftover Classic Ratatouille with Herbed Tomato Sauce?

Transfer to an airtight jar and refrigerate for up to 5–7 days. Most sauces freeze well for up to 2 months — portion into small containers or freezer bags so you can thaw only what you need. Stir before serving; cream- or yogurt-based sauces may separate on standing.

Can I substitute ingredients in Classic Ratatouille with Herbed Tomato Sauce?

Yes — most ingredients in this recipe have flexible swaps. For oil, use any neutral high-smoke-point oil (avocado, grapeseed, refined coconut). For aromatics, dried herbs at ⅓ the volume of fresh work in a pinch. The full ingredient list is shoppable on Instacart so you can see substitutes in real time.

How do I scale Classic Ratatouille with Herbed Tomato Sauce for a different number of people?

The recipe is written for 4 servings. Multiply each ingredient by (your serving target / 4). Cook time stays roughly the same up to 2x; for 3-4x batches, switch from a skillet to a sheet pan or stockpot so the food isn't crowded — overcrowding steams instead of browns.

What goes well with Classic Ratatouille with Herbed Tomato Sauce?

French vegetarian like this pair well with a simple grain (rice, couscous, or crusty bread), a quick salad with acid (lemon vinaigrette, pickled onions), and a pan sauce or yogurt-based dip. Tap "Plan a meal with the AI" to get specific side suggestions.

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