Preheat the oven to 300°F. Line a baking sheet with foil for easier cleanup. Cut two additional large sheets of foil for wrapping the ribs.
In a small bowl, combine the brown sugar, salt, smoked paprika, garlic powder, onion powder, cumin, and Italian seasoning.
Remove the membrane from the back of the ribs. Pat the ribs dry with paper towels.
Divide the spice rub evenly between both racks, seasoning both sides thoroughly. Press the seasoning into the meat to help it adhere.
Wrap each rack tightly in foil and place them seam side up on the prepared baking sheet.
Bake for about 2 hours, or until the ribs are tender.
Carefully open the foil packets and transfer the ribs to the foil-lined baking sheet, meaty side up.
Brush BBQ sauce generously over both sides of the ribs.
Turn the oven to BROIL. Broil the ribs for 2–3 minutes, or until the sauce is bubbling and caramelized.
Remove from the oven, let rest for a few minutes, then slice and serve.