Preheat the oven to 350°F. Lightly grease a round baking dish or a 9×9-inch square baking dish.
In a large bowl, combine the shredded chicken, softened cream cheese, 1 cup cheddar cheese and buffalo wing sauce. Stir until evenly combined, pressing any cream cheese lumps against the bowl with your spoon.
2 cups rotisserie chicken, 8 oz cream cheese, 1 1/2 cups cheddar cheese, 1 1/2 cups buffalo wing sauce
Spread the mixture evenly into the prepared baking dish. Sprinkle the remaining ½ cup cheddar cheese over the top.
1 1/2 cups cheddar cheese
Bake uncovered for 15–20 minutes, or until the center reaches 165°F and the cheese has melted. Allow additional time if needed.
Serve warm with tortilla chips, celery sticks or carrot sticks. Offer blue cheese dressing or ranch on the side, if desired.