Peel potatoes and dice into bite size pieces.

Melt butter and add chopped onion, carrots, celery and garlic. When vegetables are tender, add flour and removed from heat.

Pour broth into pot with carrots/onion mixture. Add to crock pot with remaining ingredients. Cook on low for 8-10 hours.

Grate pecorino into soup and mix

Optional: remove several cups of soup and blend to make smooth and return to crock pot.