via Casserole Crissy
Preheat oven to 350F/180C.
Stir together half of shredded cheese, cream cheese, sour cream, melted butter, water, ranch dressing mix, and 2/3 of bacon. Combine well.
Stir in cooked chicken and hashbrowns.
Spoon evenly into a greased 9x13 baking dish.
Bake 30 minutes. remove from oven, top with remaining cheese and bacon. Bake 20-25 minutes more.
Garnish with sliced green onions if desired.