How to Make It
Preheat the oven to 375°. In a large bowl, mix the cream cheese with the hot sauce and sour cream until combined. Stir in the chicken, 1 1/2 cups of the cheese and the 1/4 cup of scallions. Scrape the mixture into a medium cast-iron skillet and sprinkle the remaining 1/2 cup of cheese on top.
Bake the dip for about 20 minutes, until bubbling. Turn on the broiler and broil 6 inches from the heat until lightly browned on top. Let stand for 5 minutes, then garnish with scallions and serve with tortilla chips and celery sticks.