Crockpot Pierogi Casserole with Kielbasa (Creamy and Easy) - My Home Made Recipe

Ingredients

• 2 (16 oz) packages frozen potato and cheese pierogi, not thawed
• 1 lb (450 g) smoked kielbasa, sliced 1/2 inch thick
• 1 3/4 cups (415 ml) low-sodium chicken broth
• Nonstick cooking spray or 1 teaspoon butter for greasing
• 8 oz (225 g) cream cheese, softened
• 1/2 cup (120 g) sour cream
• 2 cups (225 g) shredded sharp cheddar cheese, divided
• 2 cloves garlic, minced
• 1/2 teaspoon onion powder
• 1/2 teaspoon kosher salt, plus more to taste
• 1/2 teaspoon black pepper
• 2 green onions, thinly sliced, for serving