Slow Cooker Buffalo Chicken Soup

INGREDIENTS

1/2 cup

butter

1/2 cup

all-purpose flour

4 cups

low-sodium chicken broth

1 tsp

salt, plus additional to taste

Freshly ground black pepper,

1/3 cup

Buffalo wing sauce (such as Frank's RedHot Original), plus additional for serving

1/3 cup

blue cheese dressing

1 1/2 lb

(about 3 average-sized) boneless, skinless chicken breasts

1 1/2 cups

chopped celery, plus additional raw celery sticks for serving

1 cup

shredded sharp cheddar

tub crumbled blue cheese, for serving