1. In a small nonstick skillet, brown pork chops in oil. Place in an 8-in. square baking dish coated with cooking spray. Layer with sweet potato; drizzle with butter.
2. In a small saucepan, combine the orange juice, brown sugar, salt, ginger, mace and pepper; bring to a boil, stirring constantly. Pour over sweet potato.
3. Cover and bake at 350° for 30-35 minutes or until the pork reaches 160° and potato is tender. Remove pork and potato; keep warm. Pour pan juices into a small saucepan. Combine cornstarch and water until smooth; stir into juices. Bring to a boil; cook and stir for 1 minute or until thickened. Serve with pork and sweet potato. Yield: 2 servings.