Healthy BBQ Chicken Quinoa Casserole (Slow Cooker)

Name: Healthy BBQ Chicken Quinoa Casserole (Slow Cooker)
Prep time: 5 min
Cook time: 3 h
Total time: 3 h 5 min
Ingredients: 1 1/4 cups chicken broth; 1 cup quinoa, (uncooked); 1 cup frozen corn kernels; 1 cup red bell pepper, (chopped); 1 cup hickory BBQ sauce, (plus additional for drizzling); 1/2 cup onion, (diced); 2 teaspoons fresh garlic, (minced); 1/2 tablespoon cumin powder; 1/2 tablespoon smoked paprika; 1/2 teaspoon chili powder; 1/2 teaspoon hickory liquid smoke; 1/4 teaspoon salt; pepper, (to taste); 1/2 pound raw chicken breasts; cilantro, (for garnish); green onion, (for garnish); cheddar cheese, (for garnish)