Place pork chops (or boneless chicken) in pan and salt & pepper to taste.
Pour sauce over meat.
Cover with mushroom soup and sliced onions over the soup.
Cover with foil and bake at 375 for about 45 minutes. I usually turn the meat half way through and stir the 'gravy', this lets the meat brown some on each side. The bake time differs according to the size of the meat, so test it for doneness before serving.