Brush the ribs with mustard and then sprinkle with salt and pepper.
Arrange the ribs on a baking tray and cover with foil. Bake in the oven for 2 hours, or until tender.
Remove from the oven. Pour off the liquid. Baste the ribs with barbecue sauce on both sides. Bake uncovered for 15-30 minutes. The meat should be tender to the point of falling apart.