01 -
Place beef stew meat, onion, garlic, carrots, celery, barley, beef broth, diced tomatoes, thyme, rosemary, salt, and pepper in the slow cooker. Stir thoroughly to combine all ingredients.
02 -
Cover and cook on low heat setting for 6-7 hours or on high heat setting for 3-4 hours, until the beef is tender and the barley is fully cooked.
03 -
Ladle soup into bowls and garnish with fresh chopped parsley before serving.