Oven-Baked Ratatouille with Eggplant, Zucchini, and Bell Peppers
A colorful, oven-baked ratatouille layered with tender eggplant, zucchini, and bell peppers in a rich tomato sauce. This french-inspired vegetarian ready in about 75 minutes pairs large, thinly sliced red bell pepper, large, thinly sliced yellow bell pepper, olive oil for a weeknight-friendly dinner that comes together with one pan and minimal cleanup. Each serving lands at about 150 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 medium (about 1 lb), sliced into 1/4-inch rounds eggplant
- 2 medium, sliced into 1/4-inch rounds zucchini
- 1 large, thinly sliced red bell pepper
- 1 large, thinly sliced yellow bell pepper
- 3 tbsp olive oil
- 1 medium, diced yellow onion
- 3 cloves, minced garlic cloves
- 14 oz canned crushed tomatoes
- 1 tsp dried thyme
- 1 tsp salt
- 1/2 tsp black pepper
- 1/4 cup chopped, for garnish fresh basil
Instructions
- Step 1: Preheat oven to 375°F. Heat 2 tbsp olive oil in a skillet over medium heat. Add 1 diced medium yellow onion and sauté for 5 minutes until translucent. Add 3 minced garlic cloves and cook for 1 minute until fragrant.
- Step 2: Stir in 14 oz canned crushed tomatoes and 1 tsp dried thyme, simmer for 5 minutes. Season with 1 tsp salt and 1/2 tsp black pepper. Spread this tomato sauce evenly in the bottom of a 9x13-inch baking dish.
- Step 3: Arrange 1 medium eggplant sliced into 1/4-inch rounds, 2 medium zucchini sliced into 1/4-inch rounds, and 1 each red and yellow bell pepper sliced thinly in alternating overlapping layers on top of the sauce.
- Step 4: Drizzle the remaining 1 tbsp olive oil over the vegetables and cover loosely with foil. Bake for 45 minutes until vegetables are tender.
- Step 5: Remove foil and bake uncovered for 10 more minutes until edges are slightly caramelized. Garnish with 1/4 cup chopped fresh basil before serving warm.
Equipment for this recipe
Top-rated tools to make this recipe successfully.
Frequently asked questions
How long does Oven-Baked Ratatouille with Eggplant, Zucchini, and Bell Peppers take to make?
Total time is about 75 minutes (20 min prep + 55 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 Oven-Baked Ratatouille with Eggplant, Zucchini, and Bell Peppers?
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 olive oil from drying out.
Can I substitute ingredients in Oven-Baked Ratatouille with Eggplant, Zucchini, and Bell Peppers?
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 Oven-Baked Ratatouille with Eggplant, Zucchini, and Bell Peppers for a different number of people?
The recipe is written for 6 servings. Multiply each ingredient by (your serving target / 6). 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 Oven-Baked Ratatouille with Eggplant, Zucchini, and Bell Peppers?
French 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.
