Combine first 14 ingredients in a 6-quart electric slow cooker. Cover and cook on low for 8 hours.
Alternatively, combine ingredients in a large pot and cook for two hours on low heat.
Ladle soup into bowls; top with sour cream, cheese, and cilantro.
Adapted fom My Recipes
Add-onsGrains, Pasta & Beans
Add-onsDairy & Eggs
(4 oz, 1-3 heads)