mixture evenly over the pork chops in the casserole dish, making sure the onions are spread over and around the meat. Dot the top with the butter, cut into small pieces.
Cover the casserole dish tightly with foil. Bake in the preheated oven for 45–60 minutes, or until the pork chops are very tender and the sauce has thickened into a rich gravy. Thinner chops will cook faster; thicker ones may need the full hour.
Remove the foil for the last 10 minutes of baking if you’d like the top
