01 -
Spray a 6-quart slow cooker with nonstick cooking spray.
02 -
Place chicken breasts into the slow cooker and evenly sprinkle with brown sugar, garlic powder, onion powder, cayenne pepper, and salt.
03 -
Distribute half of the butter slices evenly over the chicken.
04 -
Cook on low for 5 to 6 hours or on high for 3 to 4 hours until the chicken is tender and easily shredded.
05 -
Using two forks or an electric hand mixer, shred the chicken in the slow cooker and mix it with the natural juices. Keep warm while preparing the sauce.
06 -
In a small saucepan, combine 2 tablespoons butter, brown sugar, cayenne pepper, garlic powder, onion powder, and salt over medium heat. Whisk constantly until the mixture simmers, then remove from heat.
07 -
Place shredded chicken on hamburger buns and drizzle with the prepared Nashville hot sauce as desired.