A comforting and creamy casserole made with hash browns, cheese, and a crispy topping.
Preheat your oven to 350°F (175°C).
Preheating ensures even cooking from the start.
In a large mixing bowl, combine the hash browns, sour cream, shredded cheese, seasoning salt, pepper, and diced onion.
Make sure the hash browns are evenly coated with the mixture for consistent flavor.
Transfer the mixture into a greased 9x13 inch baking dish, spreading it out evenly.
Greasing the dish prevents sticking and makes cleanup easier.
In a small bowl, mix the crushed cornflakes with the melted butter, then sprinkle this mixture evenly over the top of the casserole.
Ensure the topping is evenly distributed for a uniform crispy layer.
Bake in the preheated oven for 40-50 minutes, or until the top is golden brown and the casserole is bubbling.
Check the casserole at 40 minutes to avoid over-browning.
Remove from the oven and let it cool for 5 minutes before serving.
Letting it cool slightly helps the casserole set and makes serving easier.