Slow Cooker Mushroom Barley Soup is bursting with tender mushrooms, carrots, celery and onions complimented with bits of barley in a perfectly seasoned broth. Let your slow cooker do the work for you today!
Arrange carrots, celery and onion in bottom of slow cooker. Top with mushrooms then garlic, thyme, kosher salt and pepper. Top with barley and add broth.
Cook 6 hours on low.
Stir in butter and let cook additional 15 minutes until butter is melted and blended in.