01 - Place shredded chicken, cream cheese, ranch dressing, buffalo sauce, cheddar cheese, and mozzarella cheese into the crockpot.
02 - Stir everything together until well combined and evenly distributed.
03 - Cover and cook on LOW for 2 hours, stirring once halfway through, until the dip is hot and bubbly.
04 - Stir well before serving to ensure even consistency.
05 - Sprinkle chives or green onions and blue cheese on top if desired. Serve warm with tortilla chips, celery sticks, or carrot sticks.