Vegan veggie lasagna is a plant-based version of the classic recipe that is just as delicious and satisfying. Instead of using cheese and meat, this lasagna is made with layers of lasagna noodles, sautéed vegetables like mushrooms, bell peppers, and spinach, and a flavorful tomato sauce. A creamy cashew-based sauce is used in place of the traditional béchamel sauce, creating a lasagna that is creamy and full of flavor.