Herb-Roasted Ratatouille Tian

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

Thinly sliced zucchini, eggplant, and tomatoes layered with fragrant herbs and roasted until tender and caramelized in this classic Provençal vegetable dish. This french-inspired vegetarian ready in about 70 minutes pairs medium, thinly sliced zucchini, medium, thinly sliced eggplant, medium, thinly sliced ripe tomatoes for a weeknight-friendly dinner that comes together with one pan and minimal cleanup. Each serving lands at about 180 calories and feeds 4, 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: 20 min Cook: 50 min Serves 4 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 3 tbsp olive oil with 3 minced garlic cloves, 1 tbsp chopped fresh thyme, 1 tsp chopped fresh rosemary, 1 tsp salt, and 1/2 tsp black pepper.
  2. Step 2: Lightly grease a 9-inch round baking dish. Arrange alternating slices of 2 medium zucchini, 1 medium eggplant, and 3 medium tomatoes upright in concentric circles, packing them tightly.
  3. Step 3: Drizzle the herb and garlic olive oil mixture evenly over the arranged vegetables, ensuring every slice is coated.
  4. Step 4: Cover the dish with foil and bake for 30 minutes. Remove foil and continue roasting uncovered for another 20 minutes until vegetables are tender and edges caramelize. If desired, sprinkle 1/4 cup grated Parmesan cheese over the top during the last 5 minutes of baking.
  5. Step 5: Let stand for 5 minutes before serving to allow flavors to meld and juices to settle.

Frequently asked questions

How long does Herb-Roasted Ratatouille Tian take to make?

Total time is about 70 minutes (20 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 Herb-Roasted Ratatouille Tian?

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 olive oil from drying out.

Can I substitute ingredients in Herb-Roasted Ratatouille Tian?

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 Herb-Roasted Ratatouille Tian 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 Herb-Roasted Ratatouille Tian?

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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