01 - Set the oven to 300°F to prepare for slow cooking.
02 - Pat beef ribs dry thoroughly with paper towels.
03 - Combine brown sugar, smoked paprika, salt, black pepper, garlic powder, onion powder, and cayenne pepper in a small bowl.
04 - Rub the spice mixture evenly over all sides of the ribs.
05 - Place ribs on a foil-lined large baking tray and cover tightly with a second piece of foil to seal.
06 - Cook ribs in the oven for 2 hours and 30 minutes until tender and meat begins to pull from the bone.
07 - While ribs roast, whisk together barbecue sauce, apple cider vinegar, and honey in a small bowl.
08 - Remove ribs from the oven, discard top foil, and brush the ribs generously with the prepared glaze.
09 - Increase oven temperature to 425°F or preheat a grill. Return ribs uncovered to the oven or grill for 15–20 minutes, basting once more until sticky and caramelized.
10 - Let ribs rest for 10 minutes before slicing between the bones. Serve hot.