A creamy and cheesy potato casserole perfect for gatherings.
Preheat your oven to 325°F (165°C).
Ensure the oven is fully preheated before placing the dish inside for even cooking.
In a large mixing bowl, combine the melted butter, diced onion, shredded cheddar cheese, sour cream, and hash browns.
Mix thoroughly to ensure all ingredients are evenly distributed.
Transfer the mixture into a greased 13 x 9-inch baking dish, spreading it out evenly.
Use a spatula to smooth the top for even baking.
Bake in the preheated oven for 1 hour, or until the top is golden and bubbly.
Check the casserole halfway through to ensure it is baking evenly.
Remove from the oven and let it cool for a few minutes before serving.
Allowing the casserole to cool slightly will make it easier to serve.