Step-by-Step Instructions

Step 1: Prepare the Ingredients

1. Peel and slice the potatoes into even rounds for consistent cooking.
2. Slice the kielbasa into half-inch pieces. If desired, brown the kielbasa in a skillet for added flavor.
3. Chop the onion finely to ensure it blends seamlessly into the dish.

Step 2: Make the Cheese Sauce

1. In a mixing bowl, combine cream of mushroom soup, sour cream, milk, garlic powder, smoked paprika, salt, and pepper. Stir until smooth.
2. Add shredded cheddar and mozzarella cheeses to the mixture, reserving some for topping later.

Step 3: Assemble the Crockpot

1. Grease the crockpot with butter or use a liner.
2. Layer half of the sliced potatoes at the bottom of the crockpot.
3. Spread half of the kielbasa and chopped onion over the potatoes.
4. Pour half of the cheese sauce over the layer.
5. Repeat the layers with the remaining potatoes, kielbasa, onion, and cheese sauce.

Step 4: Cook

1. Cover and cook on low for 6-8 hours or on high for 3-4 hours.
2. Check for doneness by piercing the potatoes with a fork. They should be tender but not mushy.

Step 5: Add Final Touches

1. Sprinkle the reserved shredded cheese on top during the last 15-20 minutes of cooking.
2. Cover until the cheese melts and becomes bubbly.

Step 6: Serve

1. Let the dish cool for 10 minutes before serving to allow the sauce to thicken.
2. Garnish with parsley or green onions if desired.
3. Serve hot, either as a main dish or alongside your favorite sides.