
Kielbasa sausage and tender potatoes come together in this irresistibly cheesy casserole that transforms simple ingredients into pure comfort food magic. The smoky kielbasa perfectly complements the creamy, cheese-laden potatoes, creating a dish that's both satisfying and memorable. This recipe combines Eastern European tradition with classic American casserole comfort, resulting in a meal that's sure to become a family favorite.
I've made this casserole countless times for potlucks and family gatherings, and it never fails to draw people back for seconds. The way the cheese gets slightly crispy on top while staying creamy inside creates an irresistible texture that keeps everyone coming back for more.
Essential Ingredients
- Russet Potatoes: Choose firm, unblemished potatoes of similar size for even cooking. Their high starch content creates the perfect creamy texture
- Smoked Kielbasa: Look for deeply colored sausage with visible spices. Quality kielbasa should have a firm casing and slight shine
- Sharp Cheddar Cheese: Freshly grated works best as it melts more smoothly than pre-shredded varieties. The sharp flavor cuts through the richness perfectly
- Heavy Cream: Creates an incomparably silky sauce. Make sure it's fresh and shake well before using
- Garlic and Seasonings: Fresh garlic provides better flavor than powder, though both work. Choose whole black peppercorns and grind them fresh
Detailed Instructions
- Prepare the Base:
- Preheat your oven to 350°F (175°C) and generously butter a 9x13 baking dish
- Wash and peel potatoes, then slice them into uniform 1/4-inch rounds
- Place potato slices in cold water as you cut them to prevent browning
- Cook the Kielbasa:
- Slice kielbasa into 1/4-inch rounds on a slight diagonal
- Heat a large skillet over medium-high heat until hot
- Brown kielbasa pieces in batches, about 2-3 minutes per side, until edges are caramelized
- Transfer to a paper towel-lined plate to drain excess oil
- Create the Cheese Sauce:
- In the same skillet, lower heat to medium and add butter
- Once melted, whisk in flour and cook for 2 minutes, stirring constantly
- Gradually pour in warm milk while whisking continuously to prevent lumps
- Add heavy cream and bring to a gentle simmer
- Stir in cheese handful by handful, allowing each addition to melt completely
- Season with salt, pepper, and garlic to taste
- Assemble and Bake:
- Layer half the potatoes in the prepared baking dish
- Add half the browned kielbasa and pour over half the cheese sauce
- Repeat layers with remaining ingredients
- Cover tightly with foil and bake for 45 minutes
- Remove foil and bake additional 15-20 minutes until golden and bubbly

Growing up in my family, kielbasa was always a special treat. My grandfather would bring home fresh sausages from his favorite Polish deli, and the smoky aroma would fill our entire house. This casserole brings back those cherished memories every time I make it.
Additional Recipe Insights
The real secret to this casserole's success lies in layering - both of ingredients and flavors. Each time I serve this dish, I'm reminded of how the simplest combinations often create the most memorable meals. The way the potatoes absorb the smoky flavors from the kielbasa while baking creates an incredible depth that you just can't get from quick-cooking methods.
Make-Ahead Tips
I've learned through countless dinner parties that this casserole is a fantastic make-ahead dish. The components can be prepared separately up to a day in advance, stored properly in the refrigerator, and assembled just before baking. The potatoes should be kept in cold water to prevent browning, and the cheese sauce reheats beautifully with a gentle warming and whisking.
Serving Suggestions
This casserole pairs beautifully with a crisp green salad or roasted vegetables. The rich, creamy nature of the dish calls for something fresh and light as a counterpoint. I often serve it with quick-pickled cucumbers or sauerkraut, which adds a tangy contrast that cuts through the richness perfectly.
Reheating and Storage
Through years of perfecting this recipe, I've discovered that individual portions reheat best in the oven rather than the microwave. Cover with foil and warm at 325°F until heated through. This maintains the creamy texture without making the potatoes mushy or causing the sauce to separate.
Troubleshooting Common Issues
Sometimes the sauce might appear to curdle or separate - don't panic! This usually happens if the heat is too high or the cheese is added too quickly. I've learned to keep the heat medium-low and add the cheese gradually, stirring constantly, to achieve that perfect silky texture.
After years of making this casserole, I can honestly say it's become more than just a recipe - it's a reliable friend in my kitchen arsenal. Every time I prepare it, I'm reminded of those countless family gatherings where this dish took center stage. The way it brings people together, encouraging them to slow down and savor each bite, makes all the careful preparation worthwhile. Whether you're making it for a quiet family dinner or a festive gathering, this casserole has a way of turning any meal into a special occasion.

This recipe has taught me that sometimes the most meaningful dishes aren't about fancy techniques or rare ingredients - they're about creating something that brings comfort and joy to those we share it with. The combination of smoky kielbasa, creamy potatoes, and rich cheese sauce continues to create moments of pure culinary satisfaction, proving that good food has the power to make any day better.
Frequently Asked Questions
- → Can I make this casserole ahead of time?
- Yes! Prepare everything up to the baking step, cover and refrigerate for up to 24 hours. Add 10-15 minutes to baking time when cooking from cold.
- → What kind of potatoes work best?
- Russet potatoes are ideal because they hold their shape well and have a fluffy texture. You can also use Yukon Gold potatoes.
- → Can I freeze this casserole?
- While you can freeze it, the texture of the sauce might change. If freezing, thaw overnight in the fridge and reheat covered with foil.
- → What can I serve with this casserole?
- A green salad, steamed vegetables, or roasted broccoli make great sides to balance the richness of the casserole.
- → Can I use different cheese?
- Yes! While sharp cheddar gives the best flavor, you can use any melting cheese like Gouda, Monterey Jack, or a cheese blend.