1Spray 10-inch nonstick skillet with cooking spray; heat over medium-high heat. Sprinkle pork chops with salt and pepper. Cook in skillet, turning once, until brown.
2Stir in 1/2 cup of the apple juice, the sherry and marjoram. Cover and cook over medium-low heat 5 minutes. Stir in cranberries and onions. Cook 3 to 5 minutes, turning pork once, until pork is slightly pink in center.
3Mix cornstarch and remaining 1/4 cup apple juice until smooth. Remove pork from skillet; cover to keep warm. Stir cornstarch mixture into skillet; cook and stir until thickened. Serve sauce over pork.