HEAT oven to 350°F.
MIX cream cheese, sugar and cinnamon in large bowl until blended. Stir in apples. Spoon into 13x9-inch pan sprayed with cooking spray.
MIX wafer crumbs, nuts and butter; sprinkle over cream cheese mixture. Place pan on baking sheet.
BAKE 25 min. or until hot and bubbly. Cool slightly. Top with COOL WHIP just before serving.