Vegetarian Sheet Pan Ratatouille with Mediterranean Spices

By Lauren Mitchell, Test Kitchen Director · Reviewed by AislePrompt Editorial · Published 2026-04-30 · Updated 2026-04-30

A vibrant, oven-roasted medley of zucchini, eggplant, bell peppers, and tomatoes seasoned with Mediterranean herbs for a colorful vegan main or side. This mediterranean-inspired vegetarian (vegan, gluten free) ready in about 45 minutes pairs zucchini, eggplant, red bell pepper for a weeknight-friendly dinner that comes together with one pan and minimal cleanup. Each serving lands at about 180 calories and feeds 4, so it slots cleanly into a weekly meal plan and pairs well with rice, quinoa, or a quick salad. 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.

Ingredients

• 2 medium, sliced into 1/2-inch rounds zucchini
• 1 medium, diced into 1-inch cubes eggplant
• 1 large, chopped into 1-inch pieces red bell pepper
• 1 large, chopped into 1-inch pieces yellow bell pepper
• 1 cup, halved cherry tomatoes
• 4 tbsp olive oil
• 3 cloves, minced garlic cloves
• 1 tsp dried oregano
• 1 tsp dried basil
• 1 tsp salt
• 1/2 tsp black pepper
• 2 tbsp, chopped (optional) fresh basil

Instructions

1. Step 1: Preheat oven to 425°F and line a large sheet pan with parchment paper.
2. Step 2: In a large bowl, combine 2 sliced medium zucchini, 1 diced medium eggplant, 1 chopped large red bell pepper, 1 chopped large yellow bell pepper, and 1 cup halved cherry tomatoes.
3. Step 3: Add 4 tbsp olive oil, 3 minced garlic cloves, 1 tsp dried oregano, 1 tsp dried basil, 1 tsp salt, and 1/2 tsp black pepper. Toss well to coat all vegetables evenly.
4. Step 4: Spread the vegetable mixture in an even layer on the prepared sheet pan. Roast for 25-30 minutes, stirring halfway through, until vegetables are tender and edges are caramelized.
5. Step 5: Remove from oven and sprinkle with 2 tbsp chopped fresh basil if using. Serve warm as a main dish or side.