[header] How to cook pork ribs in the oven [title] Preheat the oven to 250 ° f (121 ° c). [title] Combine all of the dry ingredients in a bowl to make the rub. [step] Place the racks rib-side down on a baking sheet or baking dish and roast in the oven for 3 hours. 
[title] Rub the mixture evenly onto both sides of the ribs. [step] When thoroughly cooked, the meat should easily separate from the bone.