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Easy Cheesy Kielbasa Pierogi Casserole

Close-up of a rich, creamy slice of pierogi casserole topped with browned cheese and slices of smoked sausage.

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This creamy pierogi casserole combines frozen pierogi, smoky kielbasa, and a rich cheese sauce, baked until golden brown. It is a hearty, family-friendly comfort food perfect for an easy weeknight dinner.

Ingredients

Scale
  • 1 (12 ounce) package smoked kielbasa sausage, sliced
  • 1 (16 ounce) package frozen potato and cheese pierogi
  • 1 tablespoon butter
  • 1 medium yellow onion, chopped
  • 1/2 cup chicken broth
  • 1 (10.5 ounce) can cream of chicken soup
  • 1 cup sour cream
  • 1 cup shredded cheddar cheese, divided
  • 1/2 cup shredded mozzarella cheese
  • 1/4 cup milk
  • 1 teaspoon dried parsley
  • 1/2 teaspoon garlic powder
  • Salt and black pepper to taste

Instructions

  1. Preheat your oven to 375 degrees Fahrenheit. Lightly grease a 9×13 inch baking dish.
  2. In a large skillet over medium heat, cook the sliced kielbasa until lightly browned. Remove the sausage with a slotted spoon and set aside.
  3. Add the butter to the same skillet. Add the chopped onion and cook until softened, about 5 minutes.
  4. Pour in the chicken broth and scrape up any browned bits from the bottom of the skillet. Let it simmer for 2 minutes.
  5. In a large bowl, whisk together the cream of chicken soup, sour cream, 3/4 cup of the cheddar cheese, mozzarella cheese, milk, parsley, and garlic powder until smooth. Season with salt and pepper.
  6. Gently fold in the frozen pierogi and the cooked kielbasa into the cheese mixture. Mix until everything is coated.
  7. Pour the pierogi mixture into the prepared baking dish, spreading it into an even layer.
  8. Sprinkle the remaining 1/4 cup of cheddar cheese over the top of the casserole.
  9. Bake for 25 to 30 minutes, or until the casserole is bubbly and the cheese on top is melted and lightly golden.
  10. Let the pierogi casserole rest for 5 minutes before you serve it.

Notes

  • If you prefer a slow cooker method, combine all ingredients in a greased slow cooker. Cook on low for 4 to 5 hours or on high for 2 to 3 hours. Top with cheese during the last 15 minutes of cooking.
  • You can substitute turkey bacon or cooked chicken for the kielbasa if you wish.
  • For extra flavor, sauté the onions in bacon grease instead of butter.

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