Preheat the oven to 300°F to 325°F
Remove the membrane from the back of the ribs
Pat the ribs dry with paper towels
Season both sides with salt, pepper, and barbecue rub
Place the ribs on a foil-lined baking sheet or in a roasting pan
Cover tightly with aluminum foil
Bake for 2.5 to 3.5 hours, until tender
Remove the foil during the last 15 to 20 minutes if you want a firmer exterior
Brush barbecue sauce over the ribs
Return the ribs to the oven uncovered for 10 to 15 minutes
Let the ribs rest for 10 minutes before slicing
Slice between the bones and serve