Mushroom and barley soup is a hearty and nutritious dish that combines the earthy flavors of mushrooms with the chewy texture of barley. This recipe typically uses ingredients like cremini mushrooms, onions, garlic, carrots, celery, and barley. To make this soup, start by sautéing onions, garlic, carrots, and celery in olive oil until softened. Then, add sliced cremini mushrooms and cook until they release their moisture. Next, add vegetable or chicken broth, barley, and simmer until the barley is tender. Season with salt, pepper, and herbs of your choice. Serve this mushroom and barley soup hot with a sprinkle of fresh parsley. It's a filling and satisfying meal on its own!