01 - Preheat the oven to 350°F. Lightly grease a medium baking dish (approximately 1.5 quarts).
02 - In a large bowl, blend cream cheese, sour cream, ranch dressing, and Buffalo sauce until smooth.
03 - Fold shredded chicken, cheddar cheese, and mozzarella cheese into the creamy mixture until evenly combined.
04 - Evenly distribute the mixture into the prepared baking dish.
05 - Bake for 20 to 25 minutes, until hot and bubbling. For a golden top, optionally broil for 2 to 3 minutes.
06 - Remove from oven and let cool slightly. Sprinkle with sliced green onions and chopped parsley.
07 - Serve warm accompanied by tortilla chips.