Preheat your oven to 350°F (175°C).

In a large mixing bowl, combine the hash browns, cream of chicken soup, sour cream, melted butter, onion powder, salt, and pepper.

Stir in the shredded cheddar cheese.

Spread the mixture evenly in a greased 9×13 inch baking dish.

Bake in the preheated oven for about 45 minutes or until the casserole is golden and bubbly.

Serve hot and enjoy!