01 -
Thoroughly season both sides of the chicken thighs with salt, garlic powder, onion powder, paprika, Italian seasoning, and black pepper.
02 -
Heat olive oil in a large skillet over medium-high heat. Once hot, sear chicken thighs on both sides until golden brown, approximately 5 to 10 minutes, ensuring the chicken is not fully cooked.
03 -
Place the seared chicken thighs evenly in the bottom of a 6-quart slow cooker.
04 -
In a large bowl, whisk together the unsalted chicken stock and chicken gravy mix until smooth.
05 -
Pour the gravy mixture over the chicken thighs. Top evenly with sliced butter.
06 -
Cook on low for 4 to 5 hours or on high for 2 to 3 hours until the chicken reaches an internal temperature of at least 165°F (74°C).
07 -
Remove chicken from the slow cooker. In a small bowl, stir together cornstarch and water until fully combined.
08 -
Whisk the cornstarch slurry constantly into the slow cooker. Return the chicken thighs to the pot, coating them thoroughly with gravy.
09 -
Set slow cooker to high and cook for an additional 30 minutes to thicken the gravy. Serve immediately.