Mushroom soup is a delicious and healthy soup that is perfect for a vegetarian meal. Made with mushrooms, onions, garlic, and broth, this soup is creamy and flavorful. It's also easy to make and can be served as a starter or a main course. Simply sauté the mushrooms and onions, add the garlic and broth, and let it simmer until the flavors meld together. Then, blend the soup until it's smooth and creamy. Garnish with fresh thyme and croutons for added texture and flavor.