01 - Pat the brisket dry with paper towels and rub olive oil over the entire surface.
02 - Combine all dry rub ingredients in a small bowl. Coat the brisket evenly with the mixture, pressing gently to adhere.
03 - Heat a large skillet over medium-high heat. Sear the brisket on all sides until browned, approximately 4 minutes per side.
04 - Place the seared brisket into the slow cooker.
05 - Whisk together all BBQ sauce ingredients in a medium bowl. Pour the sauce over the brisket, ensuring it is well coated.
06 - Cover and cook on LOW for 8 to 10 hours, or on HIGH for 4 to 5 hours, until the meat is fork-tender.
07 - Transfer the brisket to a cutting board and let it rest for 10 minutes. Slice or shred as desired.
08 - Skim excess fat from the cooking liquid. Serve the brisket topped with the sauce, garnished with parsley, and accompanied by rolls or sides.