Sweet-and-Sour Supper Recipe

In a large skillet, cook beef over medium heat until meat is no longer pink; drain. Stir in the chili powder, oregano, salt and pepper. In a greased 3-qt. baking dish, layer the rice, beef mixture, mushrooms and green pepper; set aside. In a large saucepan, combine sugar and cornstarch; stir in the remaining sauce ingredients until smooth. Bring to a boil; cook and stir for 2 minutes or until thickened. Pour over layered ingredients. Bake, uncovered, at 350 ° for 30 minutes or until heated through.