Oven-Baked Ratatouille with Fresh Basil

By AislePrompt Test Kitchen · Reviewed by AislePrompt Editorial · ·

A vibrant oven-baked ratatouille showcasing layers of zucchini, eggplant, and tomato, accented with fresh basil and garlic. This french-inspired vegetarian ready in about 65 minutes pairs medium, thinly sliced zucchini, medium, thinly sliced eggplant, medium, thinly sliced roma tomatoes for a weeknight-friendly dinner that comes together with one pan and minimal cleanup. Each serving lands at about 150 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: 15 min Cook: 50 min Serves 4 French cuisine 150 cal/serving
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Ingredients

Instructions

  1. Step 1: Preheat oven to 375°F (190°C).
  2. Step 2: Heat 2 tbsp olive oil in a skillet over medium heat. Add 1 small diced onion and 3 minced garlic cloves, sauté for 5 minutes until softened and fragrant.
  3. Step 3: Spread 1/2 cup tomato sauce evenly in the bottom of a 9-inch round baking dish. Arrange alternating slices of 1 medium zucchini, 1 medium eggplant, and 3 medium roma tomatoes in a circular pattern over the sauce.
  4. Step 4: Drizzle the remaining 1 tbsp olive oil over the vegetables, then sprinkle with 1 tsp salt, 1/2 tsp black pepper, and 1 tsp dried thyme.
  5. Step 5: Cover the dish with foil and bake for 35 minutes. Remove foil and bake an additional 15 minutes until vegetables are tender and slightly browned.
  6. Step 6: Remove from oven and sprinkle with 1/4 cup chopped fresh basil before serving warm.

Equipment for this recipe

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Frequently asked questions

How long does Oven-Baked Ratatouille with Fresh Basil take to make?

Total time is about 65 minutes (15 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 Oven-Baked Ratatouille with Fresh Basil?

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 Oven-Baked Ratatouille with Fresh Basil?

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 Oven-Baked Ratatouille with Fresh Basil 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 Oven-Baked Ratatouille with Fresh Basil?

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.