In a small bowl, combine granulated sugar, brown sugar, garlic powder, chili powder, paprika, cumin, salt, onion powder, white pepper and black pepper.
Store in a covered container at room temperature.
Assemble Ribs
Preheat oven to 350°F.
Using a butter knife, remove membrane from the back of ribs. Rinse ribs with cold water and pat dry.
Rub yellow mustard on ribs and sprinkle both sides with Oklahoma Joe's Rib Rub. Place ribs on cooking rack. Pour 1 cup of apple juice to bottom of the rack. No need to wrap ribs in aluminum foil.
Bake in the oven for 2.5 hours. Spray with apple juice every 45 minutes.