Italian Oven-Baked Ratatouille with Fresh Basil and Parmesan

By AislePrompt Test Kitchen · Reviewed by AislePrompt Editorial · ·

Layers of thinly sliced zucchini, eggplant, and tomato baked with olive oil and fresh basil, finished with a sprinkle of Parmesan cheese. This italian-inspired vegetarian (gluten-free) ready in about 75 minutes pairs medium zucchini, medium eggplant, large ripe tomatoes for a weeknight-friendly dinner that comes together with one pan and minimal cleanup. Each serving lands at about 190 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: 25 min Cook: 50 min Serves 4 Italian cuisine 190 cal/serving
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Ingredients

Instructions

  1. Step 1: Preheat oven to 375°F. Thinly slice 2 medium zucchini, 1 medium eggplant, and 3 large ripe tomatoes into 1/8-inch rounds.
  2. Step 2: In a small bowl, combine 1/4 cup extra virgin olive oil with 3 minced garlic cloves, 1 tsp salt, and 1/2 tsp black pepper.
  3. Step 3: Lightly grease a 9-inch round baking dish with a tablespoon of the olive oil mixture. Arrange the vegetable slices alternating zucchini, eggplant, and tomato vertically in a spiral overlapping pattern.
  4. Step 4: Drizzle the remaining olive oil and garlic mixture evenly over the arranged vegetables.
  5. Step 5: Tear 12 fresh basil leaves and scatter over the top.
  6. Step 6: Cover the dish with foil and bake for 40 minutes until vegetables are tender.
  7. Step 7: Remove foil, sprinkle 1/2 cup grated Parmesan cheese evenly, and bake uncovered for an additional 10 minutes until cheese melts and edges turn golden.

Equipment for this recipe

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Frequently asked questions

How long does Italian Oven-Baked Ratatouille with Fresh Basil and Parmesan 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 Italian Oven-Baked Ratatouille with Fresh Basil and Parmesan?

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 medium zucchini from drying out.

Can I substitute ingredients in Italian Oven-Baked Ratatouille with Fresh Basil and Parmesan?

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 Italian Oven-Baked Ratatouille with Fresh Basil and Parmesan 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.

Is Italian Oven-Baked Ratatouille with Fresh Basil and Parmesan gluten-free?

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

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