Place the chops on rack in a baking tray. Season with salt and pepper to taste. Cover chops with onion slices. Pour water in bottom of pan, making sure it does not touch the chops. Cover the tray with aluminium foil or tight lid and roast for one hour.
Cut into one chop to check if its done to your liking. When chops are done all the way through, remove foil or lid and return to oven for 15 to 20 minutes to brown slightly. Watch they don't burn when browning.