In a large mixing bowl, combine the thawed hashbrowns, kielbasa slices, shredded cheddar cheese, sour cream, condensed cream of chicken soup, chopped onion, melted butter, salt, and pepper.
Mix until all ingredients are evenly incorporated.
Step 3: Assemble the Casserole
Transfer the mixture to the prepared baking dish, spreading it out evenly.
Step 4: Bake
Bake in the preheated oven for 45–50 minutes, or until the casserole is bubbly and the top is golden brown.
Step 5: Garnish and Serve
Remove the casserole from the oven and let it cool for a few minutes before serving.
Garnish with chopped fresh parsley, if desired.
Variations & Tips
Add Spice: Mix in chopped jalapeños or a dash of hot sauce for a kick.
Sausage Swap: Use chorizo or andouille sausage for a different flavor profile.
Lighten It Up: Opt for reduced-fat sour cream, cheese, and soup.
Add Veggies: Include bell peppers, spinach, or broccoli for added nutrition.
Crunchy Topping: Sprinkle crushed cornflakes or breadcrumbs on top before baking for a crispy finish.