01 - Preheat oven to 375°F. Line a baking sheet with parchment paper.
02 - Slice the French bread loaf in half lengthwise. Hollow out the center of each half, leaving a 1/2-inch shell. Reserve the removed bread for another use.
03 - In a large bowl, mix the shredded chicken with Buffalo sauce, cream cheese, and ranch dressing until well combined. Stir in the mozzarella and cheddar cheeses.
04 - Spoon the buffalo chicken mixture evenly into both bread halves, pressing gently to fill.
05 - Place stuffed bread halves on the prepared baking sheet. Brush the exposed bread edges with melted butter.
06 - Bake for 20–25 minutes, until the bread is crispy and the filling is hot and bubbly.
07 - Remove from oven and let cool for 5 minutes. Sprinkle with green onions and parsley.
08 - Slice crosswise and serve warm.