This classic ratatouille recipe is a delicious and healthy way to enjoy a variety of vegetables. It features a medley of eggplant, zucchini, bell peppers, tomatoes, and onions, all cooked together in a flavorful tomato sauce. The vegetables are tender and flavorful, and the dish is perfect as a side dish or a main course. Serve it with crusty bread or over a bed of rice for a complete meal.