1. Cook first 3 ingredients in a large skillet over medium-high heat, stirring until turkey crumbles and is no longer pink; drain. Spoon mixture into a 5 1/2-qt. slow cooker; stir in corn and next 7 ingredients until well blended.
2. Cook at HIGH 4 to 5 hours or at LOW 6 to 8 hours. Serve with desired toppings.