Add the chicken to the Instant Pot. Top chicken with 1/3 cup of buffalo sauce, celery salt, and ground black pepper.
Place the lid on the Instant Pot and press MANUAL mode with HIGH pressure for 22 minutes.
Meanwhile, to make the coleslaw, in a medium mixing bowl, combine all ingredients. Toss until evenly coated. Cover with plastic wrap and refrigerate until needed.
After the chicken has fully cooked, carefully turn the steam release vent (I always do this with a long oven mitt on) and let the pressure come down manually. Once the valve pops, remove the lid.
Drain all but 1/2 cup of the liquid. Using two forks, shred the chicken (keeping larger chunks intact) and toss it with the remaining buffalo sauce.
Pile buffalo shredded chicken on each bun, then top with coleslaw (and blue cheese, if desired). Serve immediately.
Notes
- This recipe can be made in a slow cooker as well: 4 hours on high or 8 hours on low.- You can make this recipe with rotisserie chicken if you're in a time crunch. Skip the Instant Pot and warm your chicken on the stovetop in a nonstick skillet with a lid for about 8-10 minutes on medium-low.STORE leftover Instant Pot Buffalo Chicken Sliders in an airtight container in the refrigerator for up to 1 week. You can FREEZE the shredded chicken in a freezer-safe container for up to 4 months.REHEAT in the microwave or on the stovetop until warmed through. If frozen, thaw in the refrigerator overnight before reheating. For best results, store coleslaw separately in the fridge and assemble the sliders just before serving to keep them fresh and the slaw crunchy.