Rustic Italian Oven-Baked Ratatouille with Fresh Basil

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

Layered summer vegetables baked in a rich tomato sauce, topped with fresh basil and Parmesan for a comforting Italian classic. This italian-inspired vegetarian ready in about 70 minutes pairs medium eggplant, sliced 1/4 inch thick, medium zucchini, sliced 1/4 inch thick, olive oil 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: 20 min Cook: 50 min Serves 6 Italian cuisine 180 cal/serving
Plan a meal with the AI → Shop this recipe on Instacart → Shop equipment ↓

Ingredients

Instructions

  1. Step 1: Preheat oven to 375°F. In a skillet, heat 2 tbsp olive oil over medium heat. Add 1 small finely chopped onion and 3 minced garlic cloves; sauté for 4 minutes until soft and fragrant.
  2. Step 2: Stir in 2 tbsp tomato paste, 1 tsp dried oregano, 1 tsp salt, and 1/2 tsp black pepper. Cook for 2 minutes, then add 1 cup water. Simmer sauce for 10 minutes until slightly thickened.
  3. Step 3: Spread the tomato sauce evenly on the bottom of a 9x13-inch baking dish.
  4. Step 4: Arrange alternating slices of 1 medium eggplant, 2 medium zucchini, 2 medium yellow squash, and 4 large Roma tomatoes vertically over the sauce in a repeating pattern.
  5. Step 5: Drizzle remaining 2 tbsp olive oil evenly over the layered vegetables. Cover dish with foil and bake for 35 minutes.
  6. Step 6: Remove foil, sprinkle 1/3 cup grated Parmesan cheese evenly over the top, and bake uncovered for an additional 15 minutes until vegetables are tender and cheese is golden.
  7. Step 7: Garnish with 1/4 cup chopped fresh basil leaves before serving warm.

Equipment for this recipe

Top-rated tools to make this recipe successfully.

More Bakeware & baking tools → Shop all kitchen tools →

Frequently asked questions

How long does Rustic Italian Oven-Baked Ratatouille with Fresh Basil 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 Rustic Italian 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 Rustic Italian 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 Rustic Italian Oven-Baked Ratatouille with Fresh Basil 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.

What goes well with Rustic Italian Oven-Baked Ratatouille with Fresh Basil?

Italian 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.

Related recipes