Best Vegetarian Ratatouille

By Lauren Mitchell, Test Kitchen Director · Reviewed by AislePrompt Editorial · Published 2026-04-02 · Updated 2026-04-02

A vibrant, layered vegetable bake where eggplant, zucchini, and tomatoes meld into a rich, savory dish with herbed breadcrumbs for crunch. This mediterranean-inspired vegetarian ready in about 75 minutes pairs eggplant, zucchini, red bell pepper for a weeknight-friendly dinner that comes together with one pan and minimal cleanup. Each serving lands at about 210 calories and feeds 6, 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 large, 1-inch diced eggplant
• 2 medium, 1-inch diced zucchini
• 1, 1-inch diced red bell pepper
• 4 medium, 1/2-inch diced tomatoes
• 3 tbsp olive oil
• 1, finely chopped onion
• 3 cloves, minced garlic
• 1 tsp dried thyme
• 1/4 cup chopped fresh basil
• 1/2 cup panko breadcrumbs

Instructions

1. Step 1: Preheat oven to 375°F (190°C). Toss 1-inch diced eggplant, zucchini, and bell pepper with 2 tbsp olive oil, 1 tsp dried thyme, 1/2 tsp sea salt, and 1/4 tsp black pepper; spread in a single layer on a baking sheet and roast for 20 minutes until tender and slightly browned.
2. Step 2: Heat remaining 1 tbsp olive oil in a skillet over medium heat; sauté 1 finely chopped onion and 3 minced garlic cloves for 5 minutes until soft and golden, then stir in 1/2 cup diced tomatoes and cook for 3 more minutes until tomatoes break down.
3. Step 3: In a 9x13-inch baking dish, layer half the roasted vegetables, then the tomato mixture, then the remaining roasted vegetables; sprinkle with 1/4 cup chopped fresh basil.
4. Step 4: Mix 1/2 cup panko breadcrumbs with 1/4 cup reserved tomato juices and 1/2 tsp dried thyme, then scatter over the top; bake uncovered for 25 minutes until breadcrumbs are golden and bubbly.