Abstract: A convertible rotisserie support insert for a barbecue grill has an arcuate body portion (13) having an open front end (45) and a back end (23), and a height that tapers from a maximum height at the open front end of the body portion to a minimum height at the back end of the body portion. A front cover portion (21) is removably attachable to the arcuate body portion so as to extend across the front opening of the arcuate body portion. The front cover portion has at least one upwardly extending lid support structure (41) configured to support the hinged lid (55) of a barbecue grill (51) in a first angled use position relative to the bowl (53) of the barbecue grill when the convertible rotisserie support insert is placed on the rim of a hinged lid barbecue bowl. Removal of the front cover portion allows the hinged lid of the barbecue grill to drop down onto the top side (15) of the arcuate body portion (13) to a second angled use position relative to the bowl of the barbecue grill.