Wash pot roast in cool water. Place in slow cooker, leaving some room on each side. Peel pearl onions and place all around pot roast. Wash and add small red potatoes if desired. Mix together the water, garlic plus seasoning, parsley and bisto gravy browner until combined and pour over roast and onions. Place lid on the slow cooker and set on low setting for 8 hours. Remove lid, place the roast and the pearl onions on serving platter, slice up and ENJOY!