This hearty mushroom and barley soup is a satisfying meal on its own. Start by sautéing onions, garlic, and sliced mushrooms in olive oil until softened. Add vegetable or beef broth, pearl barley, and herbs like thyme and bay leaf. Simmer for about 45 minutes or until the barley is tender. Adjust the seasoning if needed and serve hot with a sprinkle of fresh parsley on top. This soup is perfect for chilly days.