- Preheat your oven to 300°F (150°C). 
- Remove the membrane from the back of the ribs. 
- Mix brown sugar, paprika, garlic powder, onion powder, salt, and black pepper in a bowl. 
- Rub the spice mixture all over the ribs. 
- Wrap the ribs in aluminum foil and place them on a baking sheet. 
- Bake in the preheated oven for 2.5 hours. 
- Remove the ribs from the oven and increase the oven temperature to 400°F (200°C). 
- Brush BBQ sauce all over the ribs. 
- Return the ribs to the oven, uncovered, and bake for an additional 30 minutes. 
- Remove from the oven and let rest for 10 minutes before serving.