Add everything to your slow cooker except for your flour and milk. Cover and let it cook for 7-8 hours on low or until chicken is cooked through and veggies are tender.
Ladle out 1-2 cup(s) of warm broth and place in a small mixing bowl. Add flour and whisk together. Slowly add in half & half and mix until well combined and smooth. Add this back into your soup, mix, and allow to cook for an addition 30 minutes.
Serve and enjoy! (Optional: I served mine with fresh chopped parsley as garnish)
*Recipe updated 3/5/2018