01 -
Remove the whole chicken from packaging, discard any giblets from the cavity, and pat the exterior dry using paper towels.
02 -
Sprinkle the BBQ dry rub evenly over the outside and inside of the chicken, massaging it into the skin for thorough coverage.
03 -
Place the sliced onion at the bottom of a 6-quart slow cooker as a flavor base.
04 -
Position the chicken breast-side down on top of the onions inside the slow cooker; no additional liquids are necessary.
05 -
Cover and cook on the low setting for approximately 8 hours until the internal temperature reaches 165°F.
06 -
Remove the lid, brush half the bottle of BBQ sauce evenly over the chicken, cover again, and let it rest on low for 15 minutes to set the glaze.
07 -
Serve the chicken warm, accompanied by the remaining BBQ sauce as a dipping option.