01 -
Thoroughly season chicken thighs on both sides with salt, garlic powder, onion powder, paprika, Italian seasoning, and black pepper.
02 -
Heat olive oil in a large skillet over medium-high heat. Sear chicken thighs until golden brown on both sides, approximately 5 to 10 minutes, without fully cooking through.
03 -
Transfer seared chicken thighs to the base of a 6-quart slow cooker.
04 -
In a large bowl, whisk together chicken stock and chicken gravy mix until fully combined.
05 -
Pour the chicken stock mixture evenly over the chicken thighs in the slow cooker. Arrange sliced butter on top of the chicken.
06 -
Cook on low heat for 4 to 5 hours or on high heat for 2 to 3 hours until the chicken reaches an internal temperature of 165°F (74°C).
07 -
Remove chicken thighs from slow cooker. Combine cornstarch and water in a small bowl to create a slurry.
08 -
Slowly whisk the slurry into the slow cooker while stirring continuously. Return chicken to the slow cooker and coat with the thickened gravy.
09 -
Increase slow cooker to high heat and cook for an additional 30 minutes to thicken the gravy. Serve immediately.