This creamy mushroom soup recipe is a classic and easy to make. It starts with sautéing onions and garlic in butter until fragrant. Then, you add sliced mushrooms and cook until they release their moisture. Next, you stir in flour to thicken the soup, followed by vegetable or chicken broth. Let it simmer for a few minutes, then blend until smooth. Finally, add cream, salt, and pepper to taste. Serve hot with a sprinkle of fresh parsley on top.