MIX wafer crumbs and butter; press onto bottom of 9-inch square pan.
BEAT pudding mixes and milk in large bowl with whisk 2 min. (Pudding will be thick.) Stir in COOL WHIP; spread over crust. Freeze 2 hours or until firm.
TOP dessert with berries. Melt chocolate as directed on package; drizzle over berries. Let stand 10 min. or until dessert is slightly softened.