01 - Preheat oven to 350°F.
02 - Slice the top off the sourdough loaf and hollow out the center, leaving a 1-inch thick shell. Reserve the removed bread cubes for dipping.
03 - In a large bowl, combine shredded chicken, cream cheese, buffalo sauce, ranch or blue cheese dressing, mozzarella, blue cheese, cheddar, and most of the green onions. Mix until thoroughly blended.
04 - Spoon the chicken mixture into the hollowed-out bread bowl. Place the filled bread bowl on a baking sheet.
05 - Bake for 25-30 minutes until the dip is hot and bubbly and the cheese is fully melted.
06 - Sprinkle with remaining green onions. Serve immediately with celery sticks, carrot sticks, tortilla chips, and reserved bread cubes for dipping.