Crockpot Cheesy Chicken Sausage Casserole with Kielbasa

Ingredients

• 1 1/2 lb (680 g) boneless skinless chicken breast, cut into 1-inch pieces
• 14 oz (400 g) smoked kielbasa, sliced into half moons
• 32 oz (900 g) frozen cubed hash brown potatoes
• 1 small yellow onion, diced
• 1 1/2 cups (170 g) shredded sharp cheddar cheese, divided
• Cooking spray or 1 tablespoon butter for greasing
• 1 can (10.5 oz / 298 g) condensed cream of chicken soup
• 1 cup (240 g) sour cream
• 1/2 cup (120 ml) low-sodium chicken broth
• 1/3 cup (80 ml) milk
• 1 teaspoon garlic powder
• 1/2 teaspoon onion powder
• 1/2 teaspoon smoked paprika
• 1/2 teaspoon kosher salt, plus more to taste
• 1/4 teaspoon black pepper
• 2 tablespoons sliced green onions
• Chopped parsley, optional