If you’re looking for an easy comfort food dinner that practically cooks itself, this Slow Cooker Pierogi & Kielbasa Casserole is the ultimate solution. With tender cheddar pierogies, smoky kielbasa sausage, and a rich creamy sauce, this crockpot casserole is perfect for busy families, meal prep, and cold-weather dinners. It’s the kind of meal that fills your home with incredible aromas and brings everyone to the table with anticipation.
This recipe celebrates the beloved flavors of Eastern European cuisine in the most convenient way possible. Pierogies—those delightful Polish dumplings stuffed with cheesy, potato goodness—are combined with smoky kielbasa and baked in a creamy sauce until everything is tender, bubbly, and absolutely irresistible. It’s comfort food at its finest, and the slow cooker does all the work.
Why You’ll Love This Slow Cooker Pierogi & Kielbasa Casserole
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✔ Easy 5-minute prep – Just layer and go
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✔ Budget-friendly ingredients – Uses affordable pantry staples
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✔ Perfect for busy weeknights – Set it and forget it
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✔ Great for meal prep & leftovers – Tastes even better the next day
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✔ Crowd-pleasing comfort food – Loved by kids and adults alike
This is one of those set-it-and-forget-it slow cooker recipes that delivers rich, creamy flavor without complicated steps. The frozen pierogies cook right in the sauce, absorbing all the savory goodness while staying perfectly tender.
The Complete Recipe: Slow Cooker Pierogi & Kielbasa Casserole
Prep Time: 5 minutes | Cook Time: 4-5 hours on LOW or 2-3 hours on HIGH | Total Time: 4-5 hours | Servings: 6-8
Ingredients
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2 (16 ounce) packages frozen cheddar pierogies
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14 ounces kielbasa sausage, sliced into rounds
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1 small onion, diced
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2 cups shredded cheddar cheese
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1 (10.5 ounce) can cream of mushroom soup
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1 cup sour cream
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½ cup chicken broth
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1 teaspoon garlic powder
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½ teaspoon black pepper
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2 tablespoons butter, sliced
For Garnish (Optional):
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Chopped fresh parsley or green onions
Step-by-Step Instructions
Step 1: Layer the Ingredients
Spray your slow cooker with non-stick cooking spray. Add half of the frozen pierogies to the bottom, spreading them in an even layer. Top with half of the sliced kielbasa and half of the diced onion.
Step 2: Mix the Creamy Sauce
In a medium bowl, combine the cream of mushroom soup, sour cream, chicken broth, garlic powder, and black pepper. Stir until smooth and well combined.
Step 3: Assemble the Casserole
Pour half of the sauce over the layers in the slow cooker. Sprinkle with about ⅓ of the shredded cheese. Repeat the layers with the remaining pierogies, kielbasa, onion, and sauce. Top with the remaining cheese and place the sliced butter on top.
Step 4: Slow Cook
Cover and cook on:
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LOW for 4 to 5 hours, or
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HIGH for 2 to 3 hours
The pierogies should be tender and the cheese fully melted and bubbly.
Step 5: Serve
Gently stir before serving, being careful not to break up the pierogies too much. Garnish with fresh parsley or green onions if desired. Serve hot.
Pro Tips for the Best Slow Cooker Sausage Casserole
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Use smoked Polish kielbasa for authentic, bold flavor. Look for it in the deli section or near other smoked sausages.
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Swap cream of mushroom with cream of chicken or cream of celery for variation.
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Add crispy bacon bits for extra richness and smoky flavor.
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Garnish with chopped parsley or green onions before serving for a fresh pop of color and flavor.
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Don’t thaw the pierogies – they go in frozen and cook perfectly in the sauce.
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For a crispy top, transfer the finished casserole to a baking dish, sprinkle with extra cheese, and broil for 2 to 3 minutes.
Delicious Variations
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Spicy Kielbasa Casserole: Use spicy kielbasa and add ½ teaspoon red pepper flakes.
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Bacon Pierogi Bake: Add ½ cup cooked, crumbled bacon to the layers.
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Vegetable Addition: Layer in 1 cup of frozen peas or chopped spinach with the pierogies.
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Three Cheese Version: Use a blend of cheddar, mozzarella, and Parmesan.
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Dill and Mustard: Add 1 teaspoon of dried dill and 1 tablespoon of Dijon mustard to the sauce for a tangy twist.
What to Serve with Pierogi Casserole
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Garlic green beans – The freshness balances the richness
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Side salad with vinaigrette – A light, tangy contrast
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Steamed broccoli – Simple and classic
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Crusty bread – For sopping up every bit of creamy sauce
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Roasted asparagus – Adds elegance and color
Storage & Meal Prep
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Refrigerator: Store in an airtight container for up to 4 days. The flavors deepen and improve overnight.
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Freezer: Freeze portions for up to 2 months. Thaw overnight in the refrigerator before reheating.
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Reheat: Microwave individual portions or warm in a 350°F oven until heated through. Add a splash of milk if the sauce seems thick.
This makes a fantastic make-ahead freezer meal for busy families. Prepare the casserole in a disposable foil pan, cover tightly, and freeze. Thaw overnight and bake as directed.
Conclusion: Comfort Food Made Effortless
Slow Cooker Pierogi & Kielbasa Casserole is the definition of set-it-and-forget-it comfort food. With minimal prep and ingredients you can easily find, you can create a hearty, satisfying meal that tastes like you spent hours in the kitchen. The creamy sauce, the tender pierogies, the smoky kielbasa—every bite is pure comfort.
Whether you’re feeding a hungry family on a busy weeknight, meal prepping for the week ahead, or bringing a dish to a potluck, this casserole delivers every time. It’s warm, filling, and absolutely delicious. Make it once, and it will become a regular request.