Oven Roasted Barbecue Pork Ribs - it's what's for dinner! 1 Preheat the oven to 250 degrees. Cut the pork ribs into three bone pieces. 2 Brush the ribs with barbecue sauce and place them bone side down in shallow roaster. Add a little water just to cover the bottom of the roaster. Cover and roast for 2 hours and 15 minutes.