Introduction
If you love the cozy comfort of pierogi and the smoky, savory bite of kielbasa, then you’re about to fall in love with this Pierogi Casserole with Kielbasa. It’s creamy, cheesy, buttery, and packed with flavor—basically everything you’d want on a cold day (or honestly any day). The best part? You get all the classic pierogi vibes without spending hours folding dough.
This casserole is made for real life: busy evenings, hungry families, and anyone who wants maximum comfort with minimum stress. It’s also perfect for meal prep, potlucks, holidays, or when you want something hearty that feels like a warm blanket.
The History
Pierogi are one of the most beloved comfort foods in Eastern Europe, especially in Poland, Ukraine, and surrounding regions. Traditionally, pierogi are dumplings made from tender dough, filled with ingredients like potatoes, cheese, sauerkraut, mushrooms, meat, or fruit. They’re usually boiled and then pan-fried in butter for extra flavor. Pierogi are often served with caramelized onions, sour cream, and sometimes crispy bacon.
Kielbasa, another Eastern European star, is a smoked sausage that comes in many varieties. It’s deeply savory, rich, and packed with seasoning. In many households, kielbasa is a go-to ingredient because it adds tons of flavor quickly without needing complicated steps.
This casserole is a modern twist inspired by those traditions. Instead of shaping dumplings individually, we layer the flavors into one dish: potatoes + cheese + onion + smoky sausage + creamy sauce. It’s comfort food evolution at its best.
Ingredients Breakdown
Here’s what makes this casserole so addictive, plus a quick explanation of what each ingredient does:
1) Pierogies (frozen)
Using frozen pierogies makes this recipe super easy. Potato and cheese pierogies are the most popular choice, but you can absolutely use other flavors depending on your taste.
- Why it works: They hold their shape perfectly while soaking up the creamy sauce.
- Best option: Potato & cheddar or classic potato & cheese.
2) Kielbasa (smoked sausage)
Kielbasa brings bold, smoky flavor that makes the casserole feel hearty and satisfying.
- Why it works: It adds protein and deep savory taste without needing extra seasoning.
- Pro tip: Browning it first creates a richer flavor.
3) Onion
Onion is essential in pierogi-style dishes. It adds sweetness and depth.
- Why it works: When softened or caramelized, it adds that classic pierogi flavor.
4) Butter
Butter is the secret behind that “pierogi shop” taste.
- Why it works: It boosts richness and helps the onions and sausage brown beautifully.
5) Cream cheese
This is what makes the sauce thick, creamy, and luxurious.
- Why it works: It gives a tangy creaminess similar to sour cream but thicker.
6) Sour cream
Sour cream makes it taste like classic pierogi toppings.
- Why it works: Adds tang and balances the richness of cheese and sausage.
7) Shredded cheese
Cheese makes the casserole gooey and irresistible.
- Best cheeses: Cheddar, mozzarella, Monterey Jack, or a mix.
- Why it works: Melts into the sauce and creates that golden topping.
8) Chicken broth or milk
This thins the sauce slightly so it coats the pierogies evenly.
- Broth: Adds savory depth.
- Milk: Makes it extra creamy and mild.
9) Seasonings (simple but powerful)
- Garlic powder: adds warmth without overpowering.
- Black pepper: enhances everything.
- Optional paprika: adds mild smoky sweetness.
- Optional parsley: freshens the finish.
Step-by-Step Recipe
This recipe is designed to be easy, but the results taste like you worked way harder than you did.
Step 1: Preheat and prep
Preheat your oven to 375°F (190°C). Lightly grease a large casserole dish (9×13 inch works great).
Step 2: Brown the kielbasa
Slice the kielbasa into coins. Heat a large skillet over medium heat and add a small amount of butter.
- Add the kielbasa slices.
- Cook for 4–6 minutes, stirring occasionally, until browned.
Why this matters: Browning creates caramelized flavor that makes the casserole taste deeper and richer.
Step 3: Cook the onions
In the same skillet, add the chopped onions.
- Cook for 5–7 minutes until soft and slightly golden.
- If you want extra flavor, cook them longer for a lightly caramelized taste.
Step 4: Make the creamy sauce
Lower the heat. Add:
- cream cheese
- sour cream
- chicken broth (or milk)
- garlic powder
- black pepper
Stir until smooth and creamy. Add 1 cup of shredded cheese and stir until melted into the sauce.
Step 5: Assemble the casserole
Place frozen pierogies in the casserole dish in a single layer (or slightly overlapping).
Pour the creamy kielbasa mixture evenly over the top, making sure all pierogies get coated.
Step 6: Add the cheesy topping
Sprinkle the remaining shredded cheese over the top.
Step 7: Bake
Cover with foil and bake for 30 minutes.
Then remove foil and bake for another 10–15 minutes, until bubbly and golden on top.
Step 8: Rest and serve
Let it rest for 5–10 minutes so it sets nicely and becomes easier to serve. Garnish with parsley if you want a fresh pop of color.
Tips
- Use frozen pierogies straight from the freezer: No boiling needed. They cook perfectly in the sauce.
- Don’t skip browning the kielbasa: It adds a deeper smoky flavor that makes the whole dish better.
- Want more “pierogi flavor”? Add extra onions and cook them a little longer for caramelization.
- Make it extra creamy: Add a splash more broth/milk if the sauce feels too thick.
- For a crispy top: Broil for 1–2 minutes at the end (watch it closely!).
- Let it rest before slicing: The sauce thickens slightly and holds together better.
Variations and Customizations
This casserole is flexible, which makes it perfect for different tastes and diets.
1) Add bacon for extra richness
Cook chopped bacon until crispy and sprinkle on top before serving. It adds crunch and that classic pierogi + bacon vibe.
2) Add sauerkraut for a tangy twist
Mix in ½–1 cup drained sauerkraut to add a traditional Polish flavor. It balances the creamy cheese with brightness.
3) Add vegetables for balance
- Mushrooms: sauté with onions for earthy flavor.
- Spinach: stir into sauce at the end until wilted.
- Peppers: add sweetness and color.
4) Use different pierogi flavors
- Cheddar & potato: classic choice.
- Potato & onion: extra savory.
- Three cheese: super indulgent.
- Sauerkraut pierogies: tangy and bold.
5) Spicy version
Add a pinch of chili flakes, a dash of hot sauce, or use spicy kielbasa for a heat kick.
6) Lighter version
- Use light cream cheese and reduced-fat sour cream
- Use turkey kielbasa instead of pork
- Use less cheese on top
7) Extra cheesy “mac and cheese” style
Add a little mozzarella + extra cheddar and a touch of mustard powder. This makes it taste like pierogi meets cheesy casserole heaven.
8) Crunchy topping version
Mix breadcrumbs with melted butter and sprinkle on top before the last 10 minutes of baking.
Health Considerations and Nutritional Value
This dish is definitely comfort food, meaning it’s rich and filling. But it can still fit into a balanced lifestyle if you enjoy it the smart way.
What’s in it nutritionally?
- Protein: Comes mainly from kielbasa and cheese.
- Carbs: Pierogies provide the main carbohydrate source.
- Fats: Cream cheese, sour cream, and sausage add richness.
How to make it more balanced
- Serve with a big side salad
- Add veggies like mushrooms, spinach, or broccoli
- Use turkey kielbasa and reduce cheese slightly
- Use half broth and half milk to lighten the sauce
Portion tip
This casserole is very filling. A moderate portion with a veggie side can feel satisfying without being too heavy.
Ingredients
- 1 (16–24 oz) package frozen pierogies (potato & cheese recommended)
- 12–14 oz kielbasa, sliced into coins
- 1 medium onion, chopped
- 2 tbsp butter (plus a little extra for the skillet if needed)
- 8 oz cream cheese, softened
- 1 cup sour cream
- ½ cup chicken broth (or milk)
- 2 cups shredded cheddar (or cheddar blend), divided
- 1 tsp garlic powder
- ½ tsp black pepper (or to taste)
- Optional: ½ tsp paprika
- Optional garnish: chopped parsley or green onions
Directions
- Preheat oven to 375°F (190°C) and grease a 9×13 casserole dish.
- In a skillet over medium heat, brown sliced kielbasa for 4–6 minutes. Remove from heat.
- Add chopped onion to the same skillet and cook for 5–7 minutes until softened.
- Reduce heat to low. Stir in cream cheese, sour cream, and broth (or milk) until smooth.
- Add garlic powder, pepper, and paprika (if using). Stir well.
- Mix in 1 cup shredded cheese until melted.
- Place frozen pierogies in the casserole dish. Pour sauce mixture over them evenly.
- Top with remaining 1 cup shredded cheese.
- Cover with foil and bake for 30 minutes.
- Remove foil and bake for 10–15 minutes until bubbly and golden.
- Rest 5–10 minutes, garnish if desired, and serve warm.
FAQ
Can I use fresh pierogies instead of frozen?
Yes! If using fresh pierogies, reduce baking time slightly since they’ll cook faster. Keep an eye on the casserole and bake until hot and bubbly.
Do I need to boil the frozen pierogies first?
Nope. That’s the beauty of this casserole. Frozen pierogies cook perfectly in the creamy sauce while baking.
What type of kielbasa works best?
Smoked kielbasa is the classic choice. Beef, pork, or turkey kielbasa all work—just choose what you like.
How do I store leftovers?
Store in an airtight container in the fridge for up to 3–4 days.
How do I reheat it?
Reheat in the oven at 350°F (175°C) for 15–20 minutes, or microwave individual portions. Add a splash of milk or broth if it looks a little dry.
Can I freeze this casserole?
Yes. Bake it, cool completely, then freeze tightly wrapped. It keeps well for up to 2 months. Thaw overnight in the fridge and reheat until hot.
What can I serve with it?
- Green salad with vinaigrette
- Roasted broccoli or green beans
- Cucumber and dill salad
- Pickles or sauerkraut
Can I make it spicier?
Absolutely. Use spicy kielbasa, add chili flakes, or drizzle hot sauce into the sauce mixture.
Why is my sauce too thick?
Some brands of cream cheese are thicker than others. Just add a little more broth or milk until you get a smooth, pourable consistency.
Can I make it more “authentic”?
For a more traditional pierogi taste, add caramelized onions, serve with sour cream on the side, and consider adding bacon bits or sauerkraut.
Summary
Pierogi Casserole with Kielbasa is the ultimate comfort food: creamy, cheesy pierogies baked with smoky sausage and onions in one easy dish.
It’s quick to assemble, packed with flavor, and perfect for cozy dinners, meal prep, or feeding a hungry crowd.
