In a small bowl, toss pork with mustard. In a large resealable plastic bag, combine flour and brown sugar; add pork and shake to coat.
In a large saucepan coated with cooking spray, cook pork in oil until pork is browned on all sides. Add garlic; cook 1 minute longer. Stir in broth. Bring to a boil. Reduce heat; cover and simmer for 15 minutes.
Stir in the onion, sweet potato, salt and pepper. Return to a boil. Reduce heat; cover and simmer 15-20 minutes longer or until meat and vegetables are tender. Stir in parsley.