slow cooker chicken enchilada soup

unsalted butter

flour

chicken broth

milk

: 10 oz can of enchilada sauce

: 15 oz can black beans (rinsed and drained)

: 14.5 oz can Rotel diced tomatoes and green chilies

: 10 oz package frozen corn

medium onion, (diced)

green pepper, (diced)

chicken tenderloins or 2 whole chicken breasts