Grease a 6 quart crockpot with cooking spray. Set aside.
In a small bowl whisk flour and heavy cream together until well combined.
Pour into prepared crockpot, then place chicken on top.
Sprinkle the chicken with salt, garlic powder, onion powder, pepper, celery seed, sage, and thyme, then top chicken with cubed butter.
Cover and cook on LOW for 4-6 hours or HIGH for 2-3 hours, or until chicken is cooked through.
Remove chicken from crockpot and set aside.
Use a whisk to whisk the sour cream into the cream sauce until smooth.
Cube or shred chicken, then stir back into the crockpot.
Serve over biscuits, mashed potatoes, rice, etc. and enjoy!
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