Prepare an 8×8″ or 9×9″ baking dish with nonstick spray. Preheat oven to 350 degrees.
In a large bowl, combine cooked chicken, softened cream cheese, sour cream, ranch or blue cheese dressing, 1 cup of shredded cheese, and buffalo sauce.
Spread into an 8×8″ or 9×9″ baking dish.
Top with 1 cup of shredded cheese.
Bake in preheated oven for 15-20 minutes or until cheese is melted and bubbly.
Sprinkle with green onions, if desired. Serve with your choice of dippers and enjoy!