Crockpot Pierogi Kielbasa Casserole (Printable Version)

Creamy slow cooker pierogi with smoky kielbasa and cheddar cheese

# What You'll Need:

→ Main Ingredients

01 - 2 (16 oz) packages frozen potato and cheese pierogi
02 - 1 lb kielbasa, sliced into 1/2-inch rounds
03 - 1 medium yellow onion, thinly sliced
04 - 2 cups shredded cheddar cheese

→ Sauce

05 - 1 (10.5 oz) can condensed cream of mushroom soup
06 - 1 cup sour cream
07 - 1/2 cup milk
08 - 1/2 teaspoon garlic powder
09 - 1/4 teaspoon black pepper

→ Topping

10 - 2 tablespoons chopped fresh chives or parsley

# How to Make It:

01 - Lightly grease the insert of a 6-quart slow cooker.
02 - Layer half the frozen pierogi on the bottom of the slow cooker.
03 - Top with half the sliced kielbasa and half the onions.
04 - Sprinkle with 1 cup of shredded cheddar cheese.
05 - Repeat layers with remaining pierogi, kielbasa, onions, and another cup of cheese.
06 - In a medium bowl, whisk together the cream of mushroom soup, sour cream, milk, garlic powder, and black pepper until smooth.
07 - Pour the sauce evenly over the layered ingredients in the slow cooker.
08 - Cover and cook on LOW for 4 hours, or until everything is hot and bubbly.
09 - Garnish with chopped chives or parsley before serving, if desired.

# Expert Tips:

01 -
  • The slow cooker does almost all the work, so you can prep it in 15 minutes and walk away for 4 hours.
  • It tastes like someone spent all day cooking, but nobody needs to hover or stress about timing.
  • Feeds a crowd without needing a complicated technique or fancy ingredients.
  • Reheats beautifully, making it perfect for meal prep or bringing to a potluck.
02 -
  • Don't use HIGH heat even if you're in a hurry—the cheese will separate and the pierogi might split, leaving you with a grainy, watery mess instead of creamy comfort.
  • The sauce looks thin before cooking but thickens as the pierogi release their starch and everything melds together over those 4 hours.
03 -
  • If you have a few minutes, quickly sauté the sliced onions in a skillet until they turn golden and soft—this deepens the flavor and makes the final dish taste more intentional.
  • Freeze leftovers in individual portions and you've got emergency comfort food that reheats in minutes and tastes like home cooking.
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