Preheat oven to 350 degrees F.
In a large bowl mix together the salt, pepper, sour cream, cream of chicken soup and milk. Then stir in the chicken, cheese and hashbrowns.
Place into a lightly greased 9x13 baking pan.
In a small mixing bowl, mix together the crushed cornflakes with the melted butter. Sprinkle over the casserole.
Bake for 1 hour or until golden brown.
