Cheesy Hash Brown Casserole

Preheat oven to 350°F and grease a baking dish.

Thaw hash browns and place in a large bowl.

Chop onion and shred cheese if needed.

Melt butter and add to bowl with soup and sour cream.

Stir in salt, pepper, onion, and cheese.

Spread mixture evenly in baking dish.

Crush cornflakes and sprinkle over top.

Bake 45 minutes until hot and golden.

Rest 5 minutes before serving.

Garnish with chopped chives if desired.