All Purpose Crockpot Shredded Chicken

lbs. boneless, skinless chicken breasts (, trimmed of excess fat)

medium yellow onion (, sliced (optional))

packed light brown sugar

garlic powder

dried minced onion

dried oregano

kosher salt

smoked paprika

black pepper

Guinness draught beer ((or your favorite beer))

fat free chicken broth ((reduced sodium if available))