Crockpot Pierogi Kielbasa Casserole

Featured in: Weeknight Dinners

This hearty slow cooker dish combines frozen potato and cheese pierogi with sliced smoky kielbasa, creating layers of comfort food perfection. The creamy sauce—whisked from condensed mushroom soup, sour cream, and milk—seeps through every layer while cheddar cheese melts over everything. After just 15 minutes of prep, let your crockpot do the work for 4 hours on low.

Updated on Wed, 28 Jan 2026 15:19:00 GMT
Golden, bubbly cheddar cheese tops layers of tender pierogi and smoky kielbasa in a slow cooker. Save
Golden, bubbly cheddar cheese tops layers of tender pierogi and smoky kielbasa in a slow cooker. | circuitdish.com

The first time I made this Crockpot Pierogi Casserole was during a snowstorm that kept us homebound for two days straight. With the wind howling outside our windows, I rummaged through my freezer and discovered a forgotten package of pierogi nestled behind frozen vegetables. The aroma of sautéing kielbasa and onions filled our home with warmth while snow piled up against the doors. My kitchen became our sanctuary that day, steam fogging up the windows as we waited impatiently for dinner.

My father-in-law, who rarely comments on my cooking beyond a polite thank you, actually went back for seconds and then asked for this recipe. His Polish grandmother used to make pierogi from scratch, so this modern interpretation earning his approval felt like winning a culinary medal. The kitchen filled with stories of his childhood dinners as he scraped the last bits of cheese from his plate, momentarily transported back to his grandmother's table.

Ingredients

  • Frozen potato and cheese pierogi: The star of the show, these little pillows of goodness develop the most delicious crispy edges where they touch the sides of the slow cooker, creating textural contrast.
  • Kielbasa: I prefer the traditional smoked Polish version, which releases its smoky oils as it cooks, infusing everything with its rich flavor.
  • Yellow onion: These become magically sweet and tender during the slow cooking process, almost melting into the sauce.
  • Cream of mushroom soup: The secret binding agent that creates silky consistency without separating, even after hours of cooking.
  • Sour cream: Adds a necessary tang that cuts through the richness and brings balance to the dish.

Instructions

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Prep your slow cooker:
Take a moment to grease the insert well, ensuring nothing sticks during the long cooking process. I learned the hard way that this step saves you from scrubbing later.
Create your foundation:
Arrange half the frozen pierogi in a single layer, like setting up dominoes. No need to defrost them first, the slow cooking process will handle that beautifully.
Build your flavor layers:
Add half the kielbasa rounds and onions, distributing them evenly so each bite has a perfect balance. The careful layering now means better flavor distribution later.
Add your first cheese blanket:
Sprinkle that first cup of cheddar evenly, making sure to reach the edges. Watch how the cheese melts down between the pieces, creating pockets of gooey goodness.
Repeat for maximum deliciousness:
Layer the remaining pierogi, kielbasa, onions, and cheese just like before. The second layer should mirror the first for consistent cooking.
Mix the magic sauce:
Whisk the soup, sour cream, milk and seasonings until smooth and velvety. The garlic powder adds a subtle depth without overwhelming the other flavors.
Pour and set:
Drizzle the sauce over everything, letting it seep between the cracks to coat every morsel. Cover and let the slow cooker work its transformative magic for 4 hours.
Final flourish:
Just before serving, sprinkle with fresh herbs for a pop of color and fresh flavor. The bright green against the golden casserole creates that Instagram-worthy moment.
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Quickly chop vegetables, blend sauces, and prepare dips or dressings for fast, everyday meal prep.
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Creamy sauce coats every bite of this hearty Crockpot Pierogi Casserole With Kielbasa. Save
Creamy sauce coats every bite of this hearty Crockpot Pierogi Casserole With Kielbasa. | circuitdish.com

Last winter, my neighbor broke her ankle slipping on ice, and I organized a meal train for her family. When I dropped off this pierogi casserole, her teenage son, who typically treats food as mere fuel rather than pleasure, texted me later asking if I could share the recipe because it was the first home-cooked meal hed actually enjoyed in weeks. Sometimes comfort food does more than fill stomachs, it lifts spirits when theyre at their lowest.

Make-Ahead Options

One Sunday morning, I prepared all the components and layered everything in the slow cooker insert, then stored it in the refrigerator with the sauce in a separate container. After returning from our sons soccer tournament that afternoon, all I had to do was place the insert in the slow cooker, pour over the sauce, and turn it on. The slight pre-chill actually helped the pierogi maintain their structure better during cooking, and dinner was ready just as homework was finished.

Dietary Adaptations

When my lactose-intolerant cousin announced a visit, I experimented with dairy-free alternatives, using lactose-free sour cream and a plant-based cheddar that actually melted properly. I held my breath during the first bite, but she closed her eyes in appreciation and declared it was the first properly comforting meal shed had in months that didnt leave her feeling unwell. The pierogi themselves still contained some dairy, but the reduced amount was manageable for her system.

Serving Suggestions

The first time I served this casserole at a potluck, I brought along a simple side of roasted Brussels sprouts with balsamic glaze, and the combination of the creamy casserole with the slightly crisp, tangy vegetables created an unexpectedly perfect balance. Many guests mentioned how the vegetables cut through the richness, making the whole meal feel more complete.

  • A crisp cucumber and dill salad provides refreshing contrast to the rich casserole.
  • Pickled beets offer a traditional Eastern European accompaniment that adds beautiful color and tangy flavor.
  • A simple bowl of applesauce on the side is surprisingly delicious with this dish, especially with a sprinkle of cinnamon.
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Perfect for a cozy family dinner, served straight from the warm crockpot. Save
Perfect for a cozy family dinner, served straight from the warm crockpot. | circuitdish.com

This crockpot pierogi casserole has become our gathering place food, the dish that signals its time to slow down and connect. When the kitchen fills with its distinctive aroma, everyone seems to instinctively migrate toward the table, ready for comfort and conversation.

Recipe FAQs

Can I use fresh pierogi instead of frozen?

Yes, fresh pierogi work well but may require slightly less cooking time. Check for doneness around 3 hours to prevent them from becoming too soft.

What other meats can I substitute for kielbasa?

Smoked sausage, andouille, or even cooked bacon pieces work great. For a lighter option, try turkey kielbasa or chicken sausage.

Can I make this on high heat?

Cook on high for 2-2.5 hours instead of 4 hours on low. Keep an eye on the pierogi to prevent them from becoming mushy.

Can I assemble this ahead of time?

Absolutely! Assemble everything in the slow cooker insert the night before, refrigerate, then start cooking when ready. Add 30-60 minutes to cook time if starting from cold.

What sides pair well with this casserole?

A crisp green salad, steamed broccoli, or roasted green beans complement the rich, creamy dish perfectly. Coleslaw also adds a nice crunch.

Crockpot Pierogi Kielbasa Casserole

Creamy slow cooker comfort with pierogi, kielbasa and melted cheddar

Prep Time
15 minutes
Time to Cook
240 minutes
Total Duration
255 minutes
Created by Luke Morris


Skill Level Easy

Cuisine American, Eastern European-inspired

Portions 6 Serves

Diet Preferences None specified

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

01 1 (10.5 oz) can condensed cream of mushroom soup
02 1 cup sour cream
03 1/2 cup milk
04 1/2 teaspoon garlic powder
05 1/4 teaspoon black pepper

Topping

01 2 tablespoons chopped fresh chives or parsley

How To Make It

Step 01

Prepare the Slow Cooker: Lightly grease the insert of a 6-quart slow cooker

Step 02

Layer First Half: Layer half the frozen pierogi on the bottom of the slow cooker, then top with half the sliced kielbasa and half the onions

Step 03

Add First Cheese Layer: Sprinkle 1 cup of shredded cheddar cheese over the first layer

Step 04

Layer Second Half: Repeat layers with remaining pierogi, kielbasa, onions, and another cup of cheese

Step 05

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

Step 06

Add Sauce to Casserole: Pour the sauce evenly over the layered ingredients in the slow cooker

Step 07

Cook: Cover and cook on LOW for 4 hours, or until everything is hot and bubbly

Step 08

Garnish and Serve: Garnish with chopped chives or parsley before serving, if desired

Gear Needed

  • 6-quart slow cooker
  • Cutting board and knife
  • Mixing bowl and whisk
  • Measuring cups and spoons

Allergy Details

Always review every item for possible allergens. Ask your doctor if unsure.
  • Contains milk
  • Contains wheat gluten
  • May contain soy from soup
  • Possibly contains egg in pierogi
  • Contains pork from kielbasa

Nutrition per Serving

Details are for reference only and don't take the place of professional guidance.
  • Caloric Content: 530
  • Fats: 32 g
  • Carbohydrates: 39 g
  • Proteins: 21 g