Baked Summer Vegetable Ratatouille

By AislePrompt Test Kitchen · Reviewed by AislePrompt Editorial · ·

A colorful medley of roasted summer vegetables layered with garden herbs and simmered to perfection. This mediterranean-inspired vegetarian ready in about 65 minutes pairs thinly sliced red bell pepper, thinly sliced yellow onion, olive oil for a weeknight-friendly dinner that comes together with one pan and minimal cleanup. Each serving lands at about 200 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.

★ 3.3 (12 ratings) Prep: 20 min Cook: 45 min Serves 4 Mediterranean cuisine 200 cal/serving
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Ingredients

Instructions

  1. Step 1: Preheat oven to 375°F. In a large bowl, toss 1 medium zucchini (sliced into 1/4-inch rounds), 1 medium eggplant (sliced into 1/4-inch rounds), 1 red bell pepper (thinly sliced), and 1 yellow onion (thinly sliced) with 3 tbsp olive oil, 2 garlic cloves (minced), and 1/4 cup fresh thyme (leaves chopped).
  2. Step 2: Spread vegetables in a single layer on a baking sheet and roast for 25 minutes, flipping once halfway, until tender and golden at edges.
  3. Step 3: Transfer roasted vegetables to a pot, add 1/4 cup fresh parsley (chopped) and 1 cup vegetable broth. Simmer uncovered for 10 minutes until broth reduces slightly and vegetables are tender, stirring occasionally. Season with 1/4 tsp salt and 1/8 tsp black pepper.

Equipment for this recipe

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Frequently asked questions

How long does Baked Summer Vegetable Ratatouille take to make?

Total time is about 65 minutes (20 min prep + 45 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 Baked Summer Vegetable Ratatouille?

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 thinly sliced red bell pepper from drying out.

Can I substitute ingredients in Baked Summer Vegetable Ratatouille?

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 Baked Summer Vegetable Ratatouille 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 Baked Summer Vegetable Ratatouille?

Mediterranean 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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