Slow cooker BBQ pork sandwiches

1 boneless pork shoulder (2 lb.)
3 onions, sliced, separated into rings
1/2 cup barbecue sauce
8 kaiser rolls
8 slices american cheese singles

Place meat in slow cooker, top with onions and barbecue sauce. Cover and cook on either LOW for 8-10 hours or HIGH for 4-5 hours.

Remove meat from slow cooker. Cut off and discard excess fat. Shred meat using 2 forks or chop meat into small pieces. Return meat to slow cooker and stir until evenly coated with sauce.

Fill rolls with meat mixture and singles just before serving.