Sheet Pan Fourth-Vegetable Ratatouille

By AislePrompt Editorial · Published 2026-07-27 · Updated 2026-07-27

An easy sheet pan ratatouille featuring four vibrant vegetables roasted with herbs and garlic for a rustic Mediterranean side dish. This Mediterranean-inspired vegetarian recipe, ready in about 45 minutes, pairs eggplant, diced, zucchini, diced, red bell pepper, diced 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 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.

Ingredients

• 1 medium (about 2 cups) eggplant, diced
• 1 medium (about 2 cups) zucchini, diced
• 1 large red bell pepper, diced
• 1 medium (about 2 cups) yellow squash, diced
• 4 tbsp olive oil
• 4 garlic cloves, minced
• 1 tsp dried thyme
• 1 tsp dried rosemary
• 1 1/2 tsp salt
• 1 tsp black pepper
• 1/4 cup fresh basil leaves, chopped

The sheet pan we’d roast this on → Best Sheet Pans in 2026: Top Picks + Buying Guide

Instructions

1. Step 1: Preheat oven to 425°F. On a large rimmed baking sheet, combine 1 medium diced eggplant (about 2 cups), 1 medium diced zucchini (about 2 cups), 1 large diced red bell pepper, and 1 medium diced yellow squash (about 2 cups).
2. Step 2: Drizzle 4 tbsp olive oil over the vegetables, then add 4 minced garlic cloves, 1 tsp dried thyme, 1 tsp dried rosemary, 1 1/2 tsp salt, and 1 tsp black pepper. Toss everything together until vegetables are evenly coated.
3. Step 3: Spread vegetables in a single layer on the baking sheet and roast for 25-30 minutes, stirring halfway through, until vegetables are tender and edges begin to caramelize.
4. Step 4: Remove from oven and sprinkle with 1/4 cup chopped fresh basil leaves before serving warm.