Place roast in 4- to 5-quart slow cooker. Pour chicken stock on top of roast. Sprinkle the seasoning mix on top of roast. Place the ½ stick butt on top of roast and seasoning.
Cover and cook on high heat 4 hours.
Open slow cooker and add potatoes to the pot. Cover and cook 1 to 2 hours more or until roast is very tender and potatoes are cooked through. Serve warm with some of the cooking liquid drizzled on top of the roast.
Recipe by Espresso and Cream at https://www.espressoandcream.com/2016/01/slow-cooker-ranch-pot-roast.html