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