For an extra layer of flavor, consider adding a sprinkle of garlic powder or smoked paprika to the soup mixture. Feel free to experiment with different types of vegetarian chili or cheese to customize the casserole to your liking. To prevent the tater tots from getting soggy, ensure they are arranged in a single layer on top of the chili. If you don't have cream of asparagus soup, you can substitute it with cream of celery or cream of potato soup.