Creating Savory Pierogi Casserole with Kielbasa is a straightforward process. Follow these steps to bring this mouthwatering dish to your dining table:

1. Preheat the Oven: Preheat your oven to 350°F (175°C).
2. Prepare the Ingredients: Thaw the frozen pierogi according to the package instructions.
3. Sauté the Kielbasa: In a skillet over medium heat, add sliced kielbasa and chopped onion. Cook until the kielbasa is browned and the onion is tender, about 5-7 minutes.
4. Mix the Sauce: In a large bowl, combine the cream of mushroom soup, sour cream, garlic powder, paprika, salt, and pepper. Mix thoroughly until smooth.
5. Combine Ingredients: In a baking dish, layer half of the pierogi on the bottom. Top with half of the kielbasa and onion mixture. Spread half of the sauce over this layer. Repeat the layers with the remaining ingredients.
6. Add Cheese Topping: Sprinkle shredded cheddar cheese generously over the top of the casserole.
7. Bake: Cover the dish with foil and bake in the preheated oven for 30 minutes. Then, remove the foil and bake for an additional 15 minutes, or until the cheese is melted and golden brown.
8. Garnish: Once baked, let the casserole sit for five minutes. Garnish with fresh parsley if desired.

Each of these steps leads you closer to savoring a delightful meal that is sure to impress.