Slow-cooker bean and barley soup

Slow-cooker bean and barley soup 1) Put the beans, water, tomatoes and their juices, garlic, celery, carrots, onion, barley, bay leaf, 1 1/2 tablespoons salt, herb blend, pepper, and porcini mushrooms (if using) in a slow cooker; cover and cook on low until the beans are quite tender and the soup is thick, about 8 hours.

Stir in the spinach, cheese, and vinegar, cover, and let the soup cook until the spinach wilts, about 5 minutes. Taste and season with salt and black pepper, to taste.

Ladle the soup into warmed bowls and drizzle each serving with olive oil.