01 - Preheat oven to 300°F.
02 - Pat the brisket dry and season evenly 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 deeply browned, about 8 minutes.
04 - Remove brisket and set aside. Add onion and garlic to the pot, sauté for 2–3 minutes until softened and fragrant.
05 - Return brisket to the pot. Pour in beef broth and barbecue sauce. Cover tightly with lid.
06 - Transfer to the oven and cook for 4 hours, or until brisket is fork-tender and easily shreds.
07 - While brisket cooks, combine green and red cabbage with grated carrot in a large bowl. Whisk together mayonnaise, apple cider vinegar, Dijon mustard, sugar, salt, and pepper. Toss cabbage mixture with dressing until well coated. Refrigerate until ready to use.
08 - Transfer cooked brisket to a cutting board. Using two forks, shred meat into bite-sized pieces. Toss with some of the cooking juices and additional barbecue sauce if desired.
09 - Layer shredded brisket on the bottom half of each slider bun. Top with a generous portion of coleslaw and 1–2 pickle slices. Close with bun tops.
10 - Serve immediately with extra barbecue sauce on the side for drizzling.