01 -
Turn your oven on to 375°F (190°C) and lightly grease a 9×13-inch pan.
02 -
Combine cream of chicken soup, sour cream, garlic powder, melted butter, paprika, and a pinch of salt and pepper in a big bowl. Mix thoroughly.
03 -
Start building by putting down half the potato slices in the dish. Add half the slices of kielbasa sausage and half the diced onion. Next, pour over part of the creamy sauce mixture and sprinkle with 1 cup of cheese.
04 -
Repeat the layering with the rest of the potatoes, the remaining sausage, onion, sauce, and finish with more cheese.
05 -
Cover the whole dish with foil and let it bake for about 40 minutes.
06 -
Take off the foil and bake uncovered for another 15 to 20 minutes, or until the cheese is bubbling and the potatoes are fully soft.
07 -
Sprinkle with chopped parsley if you'd like, and serve warm.