A delightful and easy-to-make casserole featuring hash browns and a creamy, cheesy sauce.
Melt the butter in a large saucepan over medium heat.
Ensure the butter doesn't brown; keep the heat moderate.
Add the chopped onion to the saucepan and sauté until translucent.
Stir frequently to prevent the onion from burning.
Stir in the sour cream and shredded cheddar cheese until melted and smooth.
Keep stirring to avoid lumps and ensure a smooth sauce.
Combine the cheese sauce with the hash browns in a large mixing bowl.
Ensure the hash browns are evenly coated with the sauce.
Transfer the mixture to a greased 3-quart baking dish.
Spread the mixture evenly for uniform baking.
Sprinkle the breadcrumbs over the top and drizzle with melted butter.
For a golden crust, ensure the breadcrumbs are evenly spread.
Bake in a preheated oven at 350°F for 45 minutes or until bubbly and golden.
Check halfway through to ensure even baking.
Let the casserole cool slightly before serving.
Cooling helps the casserole set and makes serving easier.