While it isn't pretty, it might the best soup we have ever had. The kids love it and even requested to make a pot at 11:30 p.m. the other night.
1 onion chopped
1 tablespoon ground cumin
45 oz. black beans or 6 cups
2 cups chicken broth
3 cups salsa of however hot you like it.
Cook the onion and cumin until onions are just becoming translucent. Puree 4 cups of beans and the chicken broth in a blender. I used the Vitamix and started heating them while the onions were cooking. Add pureed mixture to onions. Add rest of the beans and salsa. Cook until hot and serve with cheese, sour cream and tortilla chips.