01 - Preheat oven to 300°F.
02 - Pat the brisket dry and season generously with smoked paprika, chili powder, cumin, salt, and pepper.
03 - Heat olive oil in a large Dutch oven over medium-high heat. Sear brisket on all sides until browned, about 8 minutes.
04 - Remove brisket from pot. Add onion and garlic, sautéing for 2–3 minutes until softened and fragrant.
05 - Return brisket to the pot. Add beef broth and barbecue sauce. Cover tightly with lid.
06 - Transfer to oven and cook for 4 hours, or until meat is fork-tender and easily pulls apart.
07 - In a large bowl, combine green and red cabbage, carrot, mayonnaise, apple cider vinegar, Dijon mustard, sugar, salt, and pepper. Mix thoroughly. Refrigerate until serving.
08 - Transfer cooked brisket to cutting board. Shred using two forks, mixing with some cooking juices and extra barbecue sauce if desired.
09 - Layer shredded brisket on bottom half of each slider bun. Top with coleslaw and pickle slices. Close with bun tops.
10 - Serve immediately with extra barbecue sauce on the side for drizzling.