Crock Pot BBQ Chicken

Bahan-bahan (8 porsi)

• 2 pounds boneless skinless chicken breasts (approx. 4 breasts)
• ½ teaspoon garlic powder
• 1 onion (finely diced)
• 2 cups barbecue sauce (divided)
• ½ cup light beer (or chicken broth)
• 8 hamburger buns
• coleslaw