Sauté onion and beef stew in pan. Transfer to crock pot. Add remaining ingredients except pinto beans.
Cook on high for 6 hours or medium for at least 8 hours. Add pinto beans about 15 minutes prior to serving
Top with cheese. Serve
Notes
This recipe is versatile! I modify and use 1 bottle of beer + 1 cup of water (instead of 2.5 c water).Other additions include: 1 can black beans or top with cilantro