CRUSH 2 wafers; sprinkle onto bottom of 9-inch pie plate sprayed with cooking spray.
BEAT pudding mix, milk and extract with whisk 2 min. Stir in COOL WHIP and chopped chocolate; spread onto bottom of pie plate. Top with remaining wafers, cut into quarters.
FREEZE 6 hours or until firm. Remove pie from freezer 10 min. before serving; let stand at room temperature to soften slightly before cutting to serve.