
This comforting kielbasa sausage cheesy potato casserole is the answer to your coziest dinner cravings. Packed with smoky sausage, rich cheese, tender potatoes, and a golden bubbly top, it is a dish I return to whenever I need a little kitchen cheer. Whether you are headed to a potluck or just want a hearty family meal, this casserole delivers every time.
I still remember the first time I brought this to a family game night—the pan was scraped clean and everyone demanded the recipe for their own gatherings.
Ingredients
- Smoked kielbasa sausage: Sliced into rounds brings smoky flavor and hearty bites. Choose a sausage with a deep color and strong aroma
- Yukon Gold or Russet potatoes: Diced or sliced provide comforting texture and soak up the cheese sauce. Look for firm potatoes without sprouts
- Shredded sharp cheddar cheese: Gives bold, tangy flavor and creamy melt. Freshly grated cheese melts best and avoids clumps
- Finely chopped onion and minced garlic: Layer in savory depth. Yellow onions and fresh garlic will give the most aromatic base
- Butter and all purpose flour: Combine to build a classic roux creating a rich, velvety sauce
- Whole milk or half-and-half: For extra richness forms the creamy backbone of the sauce. Choose full fat dairy for the smoothest texture
- Dijon mustard: For subtle depth pick a quality brand for best results
- Salt, black pepper, smoked paprika, and garlic powder: Ensure balanced, robust flavors. Smoked paprika adds a hint of campfire nostalgia
- Crushed Ritz crackers or breadcrumbs with melted butter: Make for a golden and crunchy topping. Feel free to use panko for extra crispness
- Chopped parsley or green onion: For a fresh garnish
Step-by-Step Instructions
- Prep the Oven and Baking Dish:
- Set your oven to three hundred seventy five degrees Fahrenheit. Grease a nine by thirteen inch baking dish ensuring the corners are coated so nothing sticks later
- Cook the Kielbasa:
- Place sliced kielbasa in a skillet over medium heat. Let the sausage brown for five to seven minutes stirring to make sure every piece gets crisp and caramelized. Transfer to a plate and set aside
- Make the Cheese Sauce:
- Melt the butter over medium heat in a saucepan. Scatter in the chopped onion and stir gently letting it turn translucent not brown for two to three minutes. Add minced garlic and keep stirring for another thirty seconds until fragrant. Sprinkle in the flour and stir nonstop until fully absorbed forming a thick paste. Slowly pour in the milk whisking all the while to avoid lumps. Add salt pepper smoked paprika garlic powder and Dijon mustard if using. Keep stirring for five to seven minutes until the sauce thickens and coats the spoon. Fold in one and a half cups of shredded cheddar whisking till smooth and creamy
- Assemble the Casserole:
- Spread diced or sliced potatoes evenly over the bottom of the greased dish. Scatter browned kielbasa across the potatoes so every bite has sausage. Pour the warm cheese sauce over everything and use a spatula to mix gently ensuring every layer is coated
- Add Cheese and Topping:
- Sprinkle the remaining half cup of cheddar cheese on top making sure there are no bare spots. If using a crunchy topping mix the cracker or breadcrumb crumbs with melted butter toss to coat evenly and sprinkle across the surface for crunch
- Bake:
- Cover the casserole tightly with foil. Bake for forty minutes to allow the potatoes to get tender and flavors to meld. Remove the foil and bake for another twenty to twenty five minutes until the cheese is golden and bubbling and the potatoes are fork tender. Let the casserole rest five to ten minutes before slicing so it sets neatly

I love using a smoked kielbasa because it turns every bite into something special the scent alone always reminds me of big family gatherings where everyone headed straight for the kitchen as soon as this started baking
Storage Tips
Once cooled store leftover casserole in an airtight container in the fridge for up to four days. For longer storage wrap tightly and freeze for up to two months. To serve from frozen thaw overnight before reheating. Reheat gently in the oven at three hundred fifty degrees so the cheese stays silky rather than separating
Ingredient Substitutions
For a twist you can use spicy andouille sausage turkey sausage or any plant based links. Other great cheeses include pepper jack for a little heat or Gruyère for a French bistro spin. Feel free to add in vegetables like broccoli or peas—the cheese sauce makes everything taste better
Serving Suggestions
This casserole stands alone as a main course but pairs well with a tossed salad or simple steamed green beans. Bring it to potlucks serve on holiday brunch tables or slice into squares for weekday lunches
Cultural and Historical Context
While potato casseroles are classic across many cultures the combo of kielbasa sausage and creamy cheese is inspired by Eastern European comfort food traditions. Bringing those flavors into a homestyle casserole makes this dish both familiar and unique
Frequently Asked Questions
- → Can I use different types of sausage?
Yes! Andouille, turkey, or plant-based sausages work well for unique flavor profiles or dietary needs.
- → Which potatoes are best for this dish?
Yukon Gold or Russet potatoes offer a great balance of creaminess and structure. Peel them if you prefer a softer texture.
- → How do you make the casserole extra creamy?
Add a layer of sour cream before baking, or use half-and-half in the cheese sauce for extra richness.
- → Can this casserole be made ahead of time?
Absolutely. Assemble up to a day ahead, refrigerate covered, and bake as directed. Alternatively, freeze before or after baking.
- → What are some tasty add-ins?
Broccoli, peas, or bell peppers add color and nutrients. Try different cheeses for new flavors, like pepper jack or Gruyère.