In skillet, cook beef and onion until tender. Drain. Stir in flour, salt and pepper until blended. Add pizza sauce and corn. Simmer 5 minutes. Transfer to a greased 13 x 9 baking dish. Separate biscuits and arrange over beef mixture. Sprinkle with cheese. Bake, uncovered, at 350° for 20 minutes or until biscuits are golden and cheese is melted. Makes 6 servings.