French-Style Ratatouille Tian with Fresh Herbs

By , Test Kitchen Director · Reviewed by AislePrompt Editorial · ·

A colorful layered vegetable tian baked with olive oil and fresh herbs, capturing the essence of classic French Provençal cooking. This french (vegetarian) ready in about 75 minutes pairs eggplant, zucchini, yellow squash for a weeknight-friendly dinner that comes together with one pan and minimal cleanup. Each serving lands at about 180 calories and feeds 6, so it slots cleanly into a weekly meal plan and pairs well with a quick salad or grain on the side. 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.

Prep: 25 min Cook: 50 min Serves 6 French cuisine 180 cal/serving
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Ingredients

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Instructions

  1. Step 1: Preheat oven to 375°F. In a small bowl, mix 1/4 cup olive oil with 3 minced garlic cloves, 2 tsp fresh thyme leaves, 1 1/2 tsp salt, and 1 tsp black pepper.
  2. Step 2: Lightly grease a 9x13-inch baking dish. Arrange alternating slices of 1 medium eggplant, 2 medium zucchini, 2 medium yellow squash, and 4 medium roma tomatoes upright in the dish, packing tightly.
  3. Step 3: Drizzle the garlic-herb olive oil evenly over the arranged vegetables.
  4. Step 4: Cover the dish with foil and bake for 35 minutes. Remove foil and sprinkle 1/3 cup grated Parmesan cheese on top. Continue baking uncovered for 15 minutes until vegetables are tender and cheese is golden.
  5. Step 5: Remove from oven and sprinkle 1/4 cup chopped fresh basil and 2 tbsp chopped fresh parsley over the top before serving warm.

Frequently asked questions

How long does French-Style Ratatouille Tian with Fresh Herbs take to make?

Total time is about 75 minutes (25 min prep + 50 min cook). Most home cooks find this fits comfortably into a weeknight; double the batch on Sunday for two dinners.

How do I store leftover French-Style Ratatouille Tian with Fresh Herbs?

Cool to room temperature within 2 hours, then store in an airtight container in the fridge for up to 4 days. Reheat covered in a 350°F oven for 10-12 minutes, or microwave at 70% power in 60-second bursts to keep eggplant from drying out.

Can I substitute ingredients in French-Style Ratatouille Tian with Fresh Herbs?

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 French-Style Ratatouille Tian with Fresh Herbs for a different number of people?

The recipe is written for 6 servings. Multiply each ingredient by (your serving target / 6). 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.

Is French-Style Ratatouille Tian with Fresh Herbs vegetarian?

Yes — this recipe is tagged vegetarian based on its ingredient list. Always cross-check labels for packaged ingredients (sauces, broths, condiments) since formulations vary by brand.

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