Vegetarian lasagna is a delicious and hearty dinner option that is perfect for meatless Mondays or for those following a vegetarian diet. It is made with layers of lasagna noodles, a rich tomato sauce, and a variety of vegetables like spinach, mushrooms, and zucchini. The layers are then topped with a creamy ricotta and mozzarella cheese mixture. Bake it in the oven until bubbly and golden for a satisfying and comforting meal.