Baked Pierogi & Kielbasa Casserole

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This Baked Pierogi & Kielbasa Casserole is an easy, comforting dinner made with frozen pierogies, smoky kielbasa, creamy mushroom sauce, and melted cheddar cheese. With minimal prep, it is a convenient option for a busy weeknight.

 

Ingredients

  • 2 (16-ounce) boxes frozen potato and cheese pierogies
  • 1 pound smoked kielbasa or Polish sausage, sliced into ¼-inch rounds
  • 2 cups shredded sharp cheddar cheese, divided
  • 2 cups heavy cream or half-and-half
  • 1 (10.5-ounce) can condensed cream of mushroom soup

 

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Instructions

  1. Preheat the Oven: Heat the oven to 375°F (190°C). Lightly grease a 9×13-inch baking dish.
  2. Layer the Pierogies: Arrange the frozen pierogies in a mostly single layer in the prepared dish.
  3. Add the Kielbasa: Spread the sliced kielbasa evenly over the pierogies.
  4. Make the Sauce: Whisk together the heavy cream and cream of mushroom soup until smooth.
  5. Assemble: Pour the sauce evenly over the pierogies and kielbasa. Sprinkle 1½ cups of cheddar cheese on top.
  6. Bake Covered: Cover with foil and bake for 25 minutes.
  7. Finish Baking: Remove the foil and sprinkle the remaining ½ cup of cheddar over the top. Bake uncovered for another 15–20 minutes, until the cheese is melted and lightly golden and the kielbasa edges are browned.
  8. Rest and Serve: Let the casserole rest for 5–10 minutes before serving.

 

Helpful Tip

For extra flavor, briefly pan-fry the sliced kielbasa for 3–4 minutes before adding it to the casserole. This gives the sausage a lightly browned, caramelized exterior.

 

Storage

Store leftovers in an airtight container in the refrigerator and reheat until heated through.

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