Chuck or rump roast is done in a slow cooker for 6 to 8 hours with garlic powder, onion powder and bottled barbeque sauce. July 29, 2021 · by dailyfoodposts Chuck or rump roast is done in a slow cooker for 6 to 8 hours with garlic powder, onion powder and bottled barbeque sauce. Share this:TwitterFacebookLike this:Like Loading... Related