Preheat oven to 350-degrees F.
Lightly spray or grease a baking pan.
In a large bowl, combine the cream cheese and half of the shredded cheese.
Mix together the sour cream, ranch dressing mix, half of the crispy bacon, melted butter, and water.
Then, stir in the cooked chicken and the frozen hash browns.
Transfer the mixture into the prepared baking dish.
Bake for 30 minutes, then remove from the oven and top withthe remaining cheese and bacon.
Return to the oven and bake for an additional 20-25 minutes until the top is golden brown and the casserole is bubbly.
Garnish with sliced green onions, if desired.