<human>:  What is the best way to make a vegan lasagna?
<bot>: The best way to make a vegan lasagna is to use vegan substitutes for all the traditional ingredients, such as ricotta cheese, mozzarella cheese, and Parmesan cheese. You can make a creamy cashew-based ricotta cheese, use vegan mozzarella shreds, and use nutritional yeast or vegan Parmesan cheese for flavor. For the sauce, use your favorite tomato-based sauce, and fill the lasagna with your favorite type of vegan sausage, mushrooms, and other vegetables. Finish it off with some vegan cheese and herbs, and voila! You have a delicious vegan lasagna.