Place 2 cans of black beans and 1 can of chicken broth in blender, and blend until smooth.

Pour mixture into slow cooker and add last can of black beans into the mixture.

Add your jar of salsa, 1/2 cup sour cream, and 2 Tbsp. lime juice and mix in.

Add in your cumin and optional red pepper.

Stir, put lid on, and cook on low for 8 hours (preferred) or high for 4 hours. The longer you cook the more flavor and spiciness comes out.

Enjoy your easy black bean soup!