It takes around 2 hours to fully cook pork ribs in the oven at a temp of 350 F.
Preheat the oven to 350 F while preparing the pork ribs and place the Pork Ribs in a baking dish and let them bake for an hour.
Then remove the pork ribs from the oven and spread some sauce over the pork ribs and then place the ribs back into the oven for another hour or until the ribs are tender and the sauce is bubbling.
Cooking ribs fully in the oven takes around 2 hours.