01 -
Gather all ingredients and preheat oven to 190°C (375°F).
02 -
Place cream cheese and ranch dressing mix in a microwaveable, broiler-safe 23cm (9-inch) square casserole dish. Microwave on HIGH until combined and cream cheese is very soft, stirring halfway through, about 1 minute.
03 -
Remove from microwave; stir in chicken, sour cream, bacon, scallions, pepper, and 1 cup of the Cheddar cheese. Top with remaining 3/4 cup Cheddar.
04 -
Bake in the preheated oven until edges are bubbly, 25 to 30 minutes. Increase oven temperature to broil; cook until cheese is lightly golden brown in spots, 3 to 5 minutes.
05 -
Remove from oven, sprinkle with additional bacon and scallions. Serve immediately with crusty bread, crackers, or vegetables.