01 - Place chicken thighs in an even layer at the bottom of the crockpot.
02 - Scatter chopped onion and minced garlic evenly over the chicken pieces.
03 - Whisk together chicken broth, heavy cream, melted butter, Italian seasoning, paprika, salt, and pepper in a mixing bowl until thoroughly combined and smooth.
04 - Pour the creamy mixture evenly over the chicken and vegetables in the slow cooker.
05 - Cover and cook on LOW setting for 6 hours or until chicken reaches internal temperature of 165°F and shreds easily with a fork.
06 - About 15 minutes before serving, whisk cornstarch and cold water in a small bowl until completely smooth and no lumps remain.
07 - Stir the cornstarch slurry into the crockpot, cover and cook for an additional 10-15 minutes until gravy reaches desired thickness.
08 - Serve chicken thighs immediately, generously topped with the creamy gravy from the slow cooker.