Blend the BBQ Sauce: Place the chipotle peppers, adobo sauce, ketchup, apple cider vinegar, garlic, Dijon mustard, smoked paprika, cumin, and several grinds of black pepper into a food processor. Pulse until the mixture is smooth and well combined. Set this smoky and tangy BBQ sauce aside for later use.
Prepare the Jackfruit: Open the canned jackfruit and drain thoroughly. Using your hands or two forks, shred the jackfruit pieces, removing any tough core parts to keep only the tender shreds that resemble pulled meat.
Sauté Onions and Season: Heat the olive oil in a large skillet over medium heat. Add the sliced onion along with the sea salt. Cook gently, stirring often, until the onion softens and becomes translucent, about 8 to 10 minutes. If the onions start browning too fast, reduce the heat to prevent burning.
Cook the Jackfruit: Add the shredded jackfruit to the skillet with the softened onions. Stir and cook for around 5 minutes. To keep the mixture from sticking to the pan, add a splash of water as needed. Pour in ½ cup of water and half of the prepared BBQ sauce. Stir well to coat the jackfruit evenly.
Simmer the Filling: Lower the heat and cover the skillet. Allow the jackfruit mixture to simmer gently for 20 minutes, stirring occasionally to prevent burning. After simmering, uncover and stir in half of the remaining BBQ sauce to enhance the flavor. Reserve the rest of the sauce for serving.
Make the Quick Slaw: In a mixing bowl, combine shredded cabbage, chopped cilantro, lime juice, olive oil, and a pinch of salt and pepper. Toss everything together until evenly coated and fresh.
Assemble and Serve: Warm the slider or hamburger buns if desired. Layer the BBQ jackfruit generously onto each bun, then top with the quick slaw and any optional fixings like pickles or sliced serrano peppers. Serve immediately and enjoy!