In the crock-pot, combine the potatoes, chicken broth, carrots, and celery. Let this cook on low for 7 hours. After 7 hours, whisk the milk and flour together and then mix into the crock pot. This should continue cooking on low for another hour.
It will look watery at first; however, in the last hour the flour mixture will cause it to thicken. I was skeptical at first, but I guess that’s just my lack of cooking expertise! It worked, and was very tasty!
I topped this with crumbled bacon bits and shredded cheddar cheese.