In a large skillet, cook beef over medium heat until no longer pink; drain. Stir in pizza sauce. Cut each biscuit into quarters; place in a greased 13x9-in. baking dish. Top with the beef mixture.
Bake, uncovered, at 400° for 20 minutes. Sprinkle with cheeses. Bake until cheese is melted, 5-10 minutes longer. Let stand for 5 minutes before serving.