Crockpot Pierogi Casserole With Kielbasa (Print Version)

Layered pierogi, kielbasa, and creamy cheese sauce slow-cooked to perfection for an easy comfort meal.

# What You 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 whole milk
08 - 1/2 teaspoon garlic powder
09 - 1/4 teaspoon black pepper

→ Topping

10 - 2 tablespoons chopped fresh chives or parsley

# Directions:

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 remaining 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 Suggestions:

01 -
  • It genuinely tastes like you've been cooking all day, but your slow cooker handles the actual work while you're doing other things.
  • The kielbasa brings this unexpected smokiness that makes the whole dish feel more sophisticated than its simple ingredients suggest.
  • There's something deeply satisfying about a casserole that's equal parts cheesy, pillowy, and substantial—it fills the kitchen with the kind of aroma that makes people ask what's for dinner before they even walk through the door.
02 -
  • Don't skip the LOW setting in favor of HIGH—I learned this the hard way when sour cream broke and separated in one experiment, creating an oily mess instead of creamy sauce.
  • Layering matters more than you'd think; if you just dump everything in at once, the sauce settles at the bottom and the top layers stay too dry, so those neat, even layers are actually doing important work.
03 -
  • If your slow cooker runs hot, check at 3.5 hours rather than waiting the full 4—some models cook faster, and you want the casserole creamy, not dried out at the edges.
  • The secret that changed everything for me was whisking the sauce until truly smooth before pouring it in; lumps of flour from the soup can create weird textures if not distributed properly.
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