01 -
Peel and dice the russet potatoes into bite-sized pieces. Thinly slice the onion. Slice the kielbasa into 1.25 cm rounds. Preheat oven to 190°C.
02 -
Heat a large skillet over medium heat. Add kielbasa slices and sauté for 3-4 minutes until lightly browned. Add onions and cook until soft and translucent to develop the base flavor.
03 -
In a mixing bowl, whisk together cream of chicken soup, sour cream, milk, garlic powder, black pepper, and 140 g of shredded cheddar cheese until fully combined.
04 -
Grease a 23x33 cm baking dish. Layer diced potatoes, sautéed kielbasa, and onions evenly. Pour the creamy cheese sauce over the ingredients and gently stir to incorporate evenly.
05 -
Cover the baking dish with aluminum foil and bake in the preheated oven for 50-60 minutes or until potatoes are tender when pierced with a fork.
06 -
Remove foil, sprinkle the remaining 50 g of cheddar cheese evenly over the top, and bake uncovered for an additional 10-15 minutes until the cheese is bubbly and golden brown.
07 -
Allow the dish to rest for 5-10 minutes before serving. Optionally, garnish with chopped fresh parsley for color and freshness.