Grease the baking sheet with oil.
Preheat the oven to 275 °F.
Sprinkle the dry rub seasoning of your choice on the ribs.
Bake for 3 to 4 hours. (usually 3.5 hours).
Remove from the oven, and unwrap them to pour out oils and drippings.
Brush the ribs with BBQ sauce and broil for 5 minutes.