HEAT oven to 350°F.
MIX crushed crackers, Parmesan cheese and 1/4 cup shredded cheese; set aside.
PREPARE Dinner as directed on package. Stir in turkey, corn and remaining 1/4 cup shredded cheese. Spoon into greased 1-1/2-qt. baking dish. Top with cracker mixture.
BAKE 10 min. or until cheese is melted and topping is golden.