You’ll place the ribs bone side down on some foil and seal it. Then all you have to do is place it in a foil packet the oven and let them bake. You’ll take them out of the foil after a couple of hours and let them finish.
Rib meat is cooked long before they are tender enough to fall off of the bone. They start to give way at 200° but I usually let them go a little bit longer than that for complete tenderness.