Italian Oven-Roasted Ratatouille with Fresh Basil and Parmesan

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

A rustic oven-roasted medley of eggplant, zucchini, and bell peppers, finished with fresh basil and shaved Parmesan cheese. This italian-inspired vegetarian ready in about 50 minutes pairs medium, cut into 1-inch cubes eggplant, medium, cut into wedges red onion, minced garlic cloves 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: 15 min Cook: 35 min Serves 4 Italian cuisine 190 cal/serving
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Ingredients

Instructions

  1. Step 1: Preheat oven to 425°F. In a large bowl, combine 1 medium cubed eggplant, 2 medium sliced zucchini, 1 large chopped red bell pepper, 1 large chopped yellow bell pepper, and 1 medium wedged red onion.
  2. Step 2: Add 4 minced garlic cloves, 4 tbsp extra virgin olive oil, 1 tsp dried thyme, 1 tsp salt, and 1/2 tsp black pepper to the vegetables. Toss thoroughly to coat.
  3. Step 3: Spread the vegetable mixture evenly on a large rimmed baking sheet in a single layer. Roast for 30-35 minutes, stirring halfway through, until vegetables are tender and slightly caramelized at the edges.
  4. Step 4: Remove from oven and immediately toss with 1/4 cup torn fresh basil leaves.
  5. Step 5: Transfer to a serving platter and sprinkle 1/3 cup shaved Parmesan cheese over the top. Serve warm or at room temperature.

Equipment for this recipe

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Frequently asked questions

How long does Italian Oven-Roasted Ratatouille with Fresh Basil and Parmesan take to make?

Total time is about 50 minutes (15 min prep + 35 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-Roasted 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 minced garlic cloves from drying out.

Can I substitute ingredients in Italian Oven-Roasted 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-Roasted 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.

What goes well with Italian Oven-Roasted Ratatouille with Fresh Basil and Parmesan?

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.

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