In a skillet, over medium heat, warm chicken and hot sauce until heated through. Stir in cream cheese and ranch dressing. Cook, stirring until well blended and warm. Mix in 1/2 of cheese and transfer mixture to a casserole dish.
Sprinkle with remaining cheese over top of dish. Bake until hot and bubbly. Serve with celery, crackers or tortilla chips. Makes 20 servings. Enjoy!