Brown Sugar BBQ Chicken

Name: Brown Sugar BBQ Chicken
Prep time: 20 min
Cook time: 6 h
Total time: 6 h 30 min
Yield: 8
Ingredients: Ingredients; 2 lbs boneless, skinless chicken breasts or thighs; 1/2 cup brown sugar, packed; 1/4 cup ketchup; 2 tablespoons apple cider vinegar; 2 tablespoons Worcestershire sauce; 1 tablespoon Dijon mustard; 1 tablespoon smoked paprika; 2 teaspoons garlic powder; 1 teaspoon onion powder; 1 teaspoon chili powder; 1/2 teaspoon cayenne pepper (optional); 1/2 teaspoon salt; 1/4 teaspoon black pepper; 1/4 cup chicken broth; 6-8 hamburger buns; Coleslaw for serving (optional); Homemade Sauce (Optional - can substitute with 3/4 cup store-bought BBQ sauce); 1/2 cup barbecue sauce; 2 tablespoons brown sugar; 1 tablespoon butter; 1 teaspoon liquid smoke (optional)