01 -
Spray a 6-quart slow cooker with nonstick cooking spray to prevent sticking.
02 -
Place chicken breasts into the slow cooker. Evenly sprinkle brown sugar, garlic powder, onion powder, cayenne pepper, and salt over the chicken.
03 -
Distribute slices of butter evenly atop the chicken. Cook on low for 5 to 6 hours or on high for 3 to 4 hours until the chicken is tender.
04 -
Using two forks or an electric hand mixer, shred the chicken directly in the slow cooker and mix thoroughly with the natural juices.
05 -
In a small saucepan over medium heat, combine remaining butter, brown sugar, cayenne, garlic powder, onion powder, and salt. Whisk constantly to prevent burning. Remove from heat once simmering.
06 -
Place shredded chicken on hamburger buns and drizzle with prepared Nashville sauce to taste.