Crockpot Pierogi Kielbasa Casserole

Featured in: Comfort Foods At Home

This hearty slow cooker dish brings together frozen potato and cheese pierogi, sliced smoky kielbasa, and thinly sliced onions in layers, all bound together by a creamy sauce made from condensed mushroom soup, sour cream, milk, and seasonings. After 4 hours on low, the cheesy, bubbling result offers the perfect balance of tender dumplings, savory sausage, and rich creaminess. The minimal prep work makes it ideal for busy weeknights, while the comforting flavors satisfy the whole family.

Updated on Wed, 28 Jan 2026 09:05:00 GMT
Golden-brown Crockpot Pierogi Casserole With Kielbasa, bubbling with melted cheddar and creamy sauce, ready to serve. Save
Golden-brown Crockpot Pierogi Casserole With Kielbasa, bubbling with melted cheddar and creamy sauce, ready to serve. | crunchymsemen.com

The aroma of pierogi and kielbasa always makes me feel like Im at a family reunion back in Michigan, even when Im alone in my apartment. This crockpot version became my winter standby when I was working late shifts and needed dinner waiting. The first time I made it, my tiny kitchen filled with that unmistakable kielbasa fragrance that somehow made my place feel twice as cozy. I remember calling my mom midway through that first batch, just to tell her Id finally found a dish that made adulting feel manageable.

Last winter, my neighbor knocked on my door asking what that incredible smell was. Twenty minutes later, we were huddled around my coffee table with steaming bowls, trading stories about our grandmothers cooking. Her Polish grandmother made pierogi from scratch, while my Hungarian grandfather insisted on kielbasa with everything. Our impromptu dinner party lasted hours, and now this dish has become our building tradition whenever the first snow falls.

Ingredients

  • Frozen potato and cheese pierogi: The frozen ones work perfectly here because they hold their shape during the slow cooking without turning mushy.
  • Kielbasa: Get the good stuff from a local butcher if you can, the extra smokiness makes all the difference in how the flavors develop.
  • Yellow onion: Thinly slicing helps it melt into the background while adding that essential sweetness that balances the rich ingredients.
  • Cream of mushroom soup: This is our secret shortcut to a velvety sauce without spending an hour making a roux and bechamel.
  • Sour cream: Full-fat works best here, adding that subtle tang that cuts through the richness of the dish.

Instructions

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Prep your slow cooker:
Give your crockpot a light coating of cooking spray or butter to prevent sticking. I learned this makes cleanup so much easier, especially around the edges where cheese tends to crust.
Create your base layer:
Arrange half the frozen pierogi in an even layer, creating a foundation for all those delicious flavors to build upon. No need to thaw them first, the slow magic will take care of that.
Add the savory elements:
Scatter half your kielbasa rounds and sliced onions over the pierogi. The kielbasa will release its smoky oils as it cooks, infusing everything below.
Bring on the cheese:
Sprinkle that first cup of cheddar evenly, making sure to reach the corners. This middle layer of cheese becomes gloriously melty and helps bind everything together.
Repeat your layers:
Add remaining pierogi, kielbasa, onions, and top with the second cup of cheese. These layers ensure every bite has the perfect combination of flavors.
Mix the creamy sauce:
Whisk together the soup, sour cream, milk, garlic powder, and pepper until smooth. The consistency should be pourable but not too thin.
Pour and cook:
Drizzle that velvety sauce over everything, letting it seep into all the nooks and crannies. Cover and let your crockpot work its low-and-slow magic for 4 hours.
Add the finishing touch:
Just before serving, sprinkle with fresh herbs for a pop of color and freshness. That bright green against the creamy background makes it look like you tried much harder than you actually did.
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Make crepes, pancakes, tortillas, and omelets evenly with quick heating and precise temperature control.
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Savory Crockpot Pierogi Casserole With Kielbasa layered with pierogi and onions, garnished with fresh chives on a rustic table. Save
Savory Crockpot Pierogi Casserole With Kielbasa layered with pierogi and onions, garnished with fresh chives on a rustic table. | crunchymsemen.com

My brother, who claims to hate anything casserole-related, stopped by unexpectedly during a snowstorm last year. With nothing else to offer, I reluctantly served him a bowl of this pierogi concoction. The silence that followed as he ate told me everything, and when he asked for the recipe before leaving, I knew this humble crockpot dish had officially transcended the casserole category. He now makes it for his poker nights, though he calls it Polish Comfort Bowl to avoid the casserole stigma.

Making It Your Own

Some nights when Im feeling particularly adventurous, I swap in different pierogi flavors like sauerkraut or sweet cheese. The mushroom soup base is versatile enough to complement almost any filling, though I find the classic potato and cheese pierogi still makes for the most crowd-pleasing version. When my vegetarian friend comes over, I section off a portion with just pierogi and extra vegetables before adding the kielbasa to the rest.

Serving Suggestions

This casserole shines brightest when served with something crisp and fresh on the side. A simple green salad dressed with just lemon and olive oil provides the perfect counterpoint to the rich, creamy main dish. On particularly indulgent evenings, I warm some crusty rye bread to soak up every last bit of that sauce, even though it probably doubles the carb count of the meal.

Storage and Reheating

If youre cooking for one or two, youll be happy to know this casserole might taste even better the next day. The flavors meld overnight in some mysterious alchemy that transforms it from delicious to extraordinary. Just store it in a sealed container and reheat gently, either in the microwave or in a covered dish in the oven.

  • For freezing, portion into individual containers so you can grab a single serving when the craving hits.
  • Add a splash of milk when reheating if the sauce has thickened too much in storage.
  • A fresh sprinkle of herbs or even a few drops of hot sauce can revive leftover portions with minimal effort.
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Family-style Crockpot Pierogi Casserole With Kielbasa served steaming hot, paired with a crisp green salad for a complete meal. Save
Family-style Crockpot Pierogi Casserole With Kielbasa served steaming hot, paired with a crisp green salad for a complete meal. | crunchymsemen.com

This crockpot pierogi casserole isnt just about convenience, its about creating space for connection without the fuss of complicated cooking. Whether youre feeding a crowd or just treating yourself after a long day, theres something uniquely satisfying about a dish that feels like it came from a grandmothers kitchen but required almost none of the work.

Recipe FAQ

Can I use fresh pierogi instead of frozen?

Yes, fresh pierogi work beautifully and may require slightly less cooking time. Check for doneness after 3 hours on low to prevent overcooking.

What can I substitute for cream of mushroom soup?

Cream of chicken, celery, or potato soup all work well. For a homemade version, whisk together a simple white sauce with sautéed mushrooms.

Can I make this on high heat?

Cook on high for approximately 2-2.5 hours, though low and slow yields more tender pierogi. Watch closely to prevent drying or sticking.

How should I store leftovers?

Refrigerate in an airtight container for up to 4 days. Reheat gently in the microwave with a splash of milk to restore creaminess.

Can I freeze this casserole?

Yes, assemble before cooking and freeze for up to 3 months. Thaw overnight in the refrigerator before cooking as directed. Already-cooked leftovers also freeze well.

What sides pair well with this?

A crisp green salad with vinaigrette cuts through the richness. Steamed broccoli, roasted Brussels sprouts, or sauerkraut also complement the Eastern European flavors.

Crockpot Pierogi Kielbasa Casserole

Creamy slow cooker layers of pierogi, kielbasa, and melted cheddar make this comfort food effortless.

Prep Time
15 minutes
Time to Cook
240 minutes
Overall Time
255 minutes
Created by Ethan Reynolds


Skill Level Easy

Cuisine American, Eastern European

Makes 6 Portion Size

Diet Details None specified

What You’ll Need

Main Ingredients

01 2 packages (16 oz each) frozen potato and cheese pierogi
02 1 lb kielbasa, sliced into 0.5 inch rounds
03 1 medium yellow onion, thinly sliced
04 2 cups shredded cheddar cheese

Sauce

01 1 can (10.5 oz) condensed cream of mushroom soup
02 1 cup sour cream
03 0.5 cup whole milk
04 0.5 teaspoon garlic powder
05 0.25 teaspoon black pepper

Topping

01 2 tablespoons fresh chives or parsley, chopped

Directions

Step 01

Prepare Slow Cooker: Lightly grease the insert of a 6-quart slow cooker with cooking spray or butter

Step 02

First Layer: Arrange half of the frozen pierogi on the bottom of the prepared slow cooker

Step 03

Add Proteins and Aromatics: Top pierogi layer with half of the sliced kielbasa and half of the onion slices

Step 04

Add Cheese: Sprinkle 1 cup of shredded cheddar cheese over the kielbasa and onions

Step 05

Second Layer: Repeat layering with remaining pierogi, kielbasa, onions, and the second cup of cheddar cheese

Step 06

Prepare Cream Sauce: In a medium mixing bowl, whisk together cream of mushroom soup, sour cream, milk, garlic powder, and black pepper until smooth and well combined

Step 07

Pour Sauce: Pour the prepared sauce evenly over all layered ingredients in the slow cooker

Step 08

Cook: Cover slow cooker with lid and cook on LOW setting for 4 hours, until all ingredients are heated through and sauce is bubbly

Step 09

Finish and Serve: Garnish with fresh chopped chives or parsley if desired and serve immediately

What You’ll Need

  • 6-quart slow cooker
  • Cutting board and sharp knife
  • Medium mixing bowl
  • Whisk
  • Measuring cups
  • Measuring spoons

Allergy Advice

Always review each component for allergens and check with your healthcare provider with any concerns.
  • Contains milk
  • Contains wheat gluten
  • May contain soy from soup ingredients
  • May contain egg from pierogi
  • Contains pork from kielbasa
  • Always verify ingredient labels for potential allergen cross-contamination

Nutrition per serving

For general awareness only — not a substitute for guidance from your doctor.
  • Kcal: 530
  • Fats: 32 grams
  • Carbohydrates: 39 grams
  • Proteins: 21 grams