1. Place onions in a lightly greased 6-qt. slow cooker. Rub roast with seasoning blend and salt; place roast on onions. Pour broth over roast. Cover and cook on LOW 8 to 10 hours or until meat shreds easily with a fork.
2. Transfer roast to a cutting board or serving platter; shred with 2 forks, removing any large pieces of fat. Remove onions with a slotted spoon, and serve with pork. (Reserve 4 cups shredded pork for Pork Noodle Bowls and Pulled Pork Nachos, if desired.)
Note: We tested with McCormick Grill Mates Backyard Brick Oven Seasoning.