Vegetable lasagna is a classic Italian dish that is perfect for a vegetarian dinner. It is made by layering lasagna noodles with a mixture of sautéed vegetables such as zucchini, bell peppers, spinach, and mushrooms, along with ricotta and mozzarella cheese. Top it off with marinara sauce and bake until bubbly and golden. This dish is hearty, flavorful, and a great way to enjoy a variety of vegetables.