We all love to eat pulled pork with macaroni and cheese on the side, but have you ever thought about mixing them together? This recipe combines the two comfort foods to make an incredibly tasty casserole. Whether you use purchased pulled pork or your own homemade leftovers, this casserole will quickly become a family favorite. Serve this casserole with homemade coleslaw and biscuits or soft rolls. You can substitute pulled chicken, pulled ham, leftover barbecue, or shredded beef for the pulled pork if you like.