My Polish neighbor, Mrs. Kowalski, carried this bubbling pan into our church potluck one chilly January evening, and I swear it barely hit the table before folks were lining up. By the time I made it through the crowd with my plate, the pan was practically licked clean. This oven baked 5-ingredient pierogi kielbasa casserole is the kind of stick-to-your-ribs comfort food that feels right at home in any Midwestern kitchen—simple, hearty, and built from freezer and fridge staples. Frozen potato-and-cheese pierogies bake up golden and tender under a blanket of smoky kielbasa, creamy sauce, and sharp cheddar, with the edges getting just crisp enough to make you close your eyes on that first bite. It’s the sort of dish you bring to a potluck when you want to be sure you’re taking home an empty pan.
Serve this casserole piping hot right out of the white baking dish, with a big green salad or simple steamed green beans to cut through the richness. A side of buttered peas or roasted carrots fits that old-fashioned church-supper table perfectly. If you like, set out a small bowl of sour cream and a jar of sauerkraut or dill pickles so folks can add a tangy bite alongside all that creamy, cheesy goodness. It pairs nicely with iced tea, light beer, or a sparkling apple cider for a cozy, crowd-pleasing meal.
Oven-Baked Pierogi Kielbasa CasseroleServings: 6
Ingredients
2 (16-ounce) boxes frozen potato and cheese pierogies
1 pound smoked kielbasa or Polish sausage, sliced into 1/4-inch rounds
2 cups shredded sharp cheddar cheese, divided
2 cups heavy cream (or half-and-half for a lighter version)
1 (10.5-ounce) can condensed cream of mushroom soup
Directions
Preheat your oven to 375°F (190°C). Lightly grease a 9x13-inch white ceramic baking dish so the pierogies don’t stick.
Arrange the frozen pierogies in a single, snug layer in the bottom of the baking dish. It’s fine if they overlap just a bit, but try to keep them mostly in one layer so they bake up evenly and get those nice golden tops.
Scatter the sliced kielbasa rounds evenly over the pierogies, making sure every scoop will get a bit of sausage. Let some pieces rest on top so they can crisp around the edges in the oven.
In a medium bowl, whisk together the heavy cream and the condensed cream of mushroom soup until smooth and well blended. This makes the rich, creamy sauce that will bubble up around the pierogies as they bake.
Pour the cream-and-soup mixture evenly over the pierogies and kielbasa, tilting the pan gently if needed so the sauce seeps down between everything. You want all the dumplings to have some sauce around them.
Sprinkle 1 1/2 cups of the shredded sharp cheddar cheese evenly over the top of the casserole, reserving the remaining 1/2 cup for later. This first layer will melt into the sauce and help it thicken and cling to the pierogies.
Cover the baking dish tightly with foil and place it on the middle rack of the preheated oven. Bake for 25 minutes, until the sauce is hot and starting to bubble around the edges.
Carefully remove the foil from the dish. Sprinkle the remaining 1/2 cup of cheddar cheese over the top. Return the casserole to the oven, uncovered, and bake for another 15–20 minutes, or until the cheese is fully melted, the top is golden in spots, and the kielbasa edges are lightly crisped.
If you’d like a deeper golden brown top, switch the oven to broil for 1–3 minutes at the end, watching closely so the cheese bubbles and browns without burning. The pierogies should be soft and tender underneath, with a creamy, thickened sauce.
Remove the casserole from the oven and let it rest for about 5–10 minutes before serving. This short rest helps the sauce settle so every spoonful has soft dumplings, smoky sausage rounds, and gooey, bubbling cheese.
Variations & Tips
For a little extra tang, stir 1/2 cup of sour cream into the cream-and-soup mixture before pouring it over the pierogies. If you prefer a different flavor base, swap the cream of mushroom soup for cream of chicken or cream of celery. You can add a handful of thinly sliced onions under the kielbasa for more sweetness, or toss in some drained sauerkraut on top of the pierogies for a very Polish twist—just know that will add a sharper bite. For a touch of color and gentle heat, sprinkle the top with a teaspoon of sweet paprika or a pinch of crushed red pepper before baking. If you need to stretch the dish for a bigger crowd, tuck in an extra half box of pierogies and a splash more cream; bake in a slightly larger pan and give it a few extra minutes. Leftovers reheat well, covered, in a low oven or microwave, and if the sauce thickens too much, just loosen it with a spoonful of cream or milk as you warm it.
