Indulge in the creamy and decadent flavors of this mushroom and brie soup. Made with a combination of mushrooms, onions, garlic, and brie cheese, this soup is rich, velvety, and perfect for a special occasion. Sauté the mushrooms with onions and garlic, then add vegetable broth and simmer until the mushrooms are tender. Blend the soup with brie cheese until smooth and creamy. Serve with a drizzle of truffle oil and a sprinkle of fresh thyme for an elegant and delicious soup.