Beat softened cream cheese until smooth. Add ranch and buffalo sauce. Beat until fully incorporated.
Fold in shredded chicken, ¾ cup cheddar, and ½ cup mozzarella.
Spread into baking dish. Top with remaining cheeses and blue cheese crumbles.
Bake at 375°F for 20–25 minutes until bubbling and golden.
Rest 5 minutes before serving.
Notes
Assemble up to 24 hours ahead and refrigerate — bake fresh before serving. Use Frank's RedHot specifically — the flavor difference is noticeable. Keep warm in slow cooker on warm setting throughout the game.
Keyword Applebee's buffalo chicken dip, buffalo chicken dip copycat, game day dip, party dip