This Mediterranean vegetable casserole is a vibrant and flavorful dish that is inspired by the flavors of the Mediterranean region. It's made with a variety of colorful vegetables, including bell peppers, zucchini, eggplant, and tomatoes. The vegetables are sautéed until tender and then combined with a tangy tomato sauce, creating a delicious and hearty filling. The sauce is made with diced tomatoes, garlic, onions, and a blend of Mediterranean herbs and spices, adding a burst of flavor to the dish. Topped with a sprinkle of feta cheese and baked until golden and bubbly, this casserole is a perfect main course for a vegetarian meal.