A crowd-pleasing sandwich of slow cooked roast beef in a roll with a side of au jus or beef juices for dipping. Serve at football parties or any other casual get-together of friends and family.
Place onion and roast in slow cooker.
Mix Seasoning Mix and water until well blended. Pour over roast. Cover.
Cook 8 hours on LOW or 4 hours on HIGH. Remove roast from slow cooker. Skim fat from au jus.
Slice beef into thin slices. Return beef to slow cooker. Serve on toasted rolls with au jus on the side for dipping.
Slow Cooker Tip: For best results, do not remove cover during cooking.