Stout Slow Cooker Corned Beef

Rinse corned beef brisket and pat dry. Rub with brown sugar, including the bottom, and gently place brisket into the slow cooker.
Arrange sweet potatoes, cabbage, onion, carrots, and red potatoes on and around the brisket in the slow cooker.
Pour 12oz water on and around brisket and vegetables to moisten the brown sugar. Cover the cooker and cook on Low until corned beef is tender, 6 to 8 hours. Allow brisket to stand 5 minutes before slicing.