how long to cook baby back ribs in oven
1 Place ribs, meat side down, in baking dishes. 2  Cover the baking dishes with aluminum foil and place in the oven. 3  If you are using small baby back ribs, take out after 3.5 hours. 4  If you are using regular baby back or St. Louis style ribs, then take out after 4 hours. Season your ribs with Dale's marinade, your favorite rib rub, grill seasoning, or simply salt and pepper. 2  Place ribs, meat side down, in baking dishes. 3  Cover the baking dishes with aluminum foil and place in the oven. 4  If you are using small baby back ribs, take out after 3.5 hours.