Roasted mushroom soup is a delicious and hearty recipe that brings out the earthy flavors of mushrooms. Start by roasting a mix of mushrooms with olive oil, salt, and pepper until they are golden and caramelized. In a separate pot, sauté onions and garlic until fragrant, then add the roasted mushrooms, vegetable broth, and herbs. Let it simmer for a while to allow the flavors to develop. Finally, blend the soup until smooth and creamy. Serve it with a dollop of sour cream and a sprinkle of fresh thyme for an extra touch of flavor.