Texas Potatoes

1 large bag of frozen cubed hashbrowns
1 small onion, chopped
1 8 oz. container of sour cream
1 8 oz. pkg of cream cheese, softened
1 can cream of mushroom soup
1 can cream of chicken soup

1-2 cups of shredded cheddar cheese
1/2 stick butter, melted

Pour hashbrowns into a greased 9x13 glass pan.  Sprinkle chopped onions in and mix well.  Mix all other ingredients, except butter, together in a separate bowl and pour over potatoes and onions.  Pour melted butter over mixture.  Bake at 350 degrees, uncovered, for about one hour or until bubbly.