Mix pudding and milk for 2 minutes with mixer on low speed. Fold in Cool Whip. Layer graham crackers and pudding mix in dish. Two layers of pudding and 3 layers of crackers. Icing: On medium heat, melt butter, chocolate, milk and syrup together in medium pan. Remove from heat, add vanilla and powdered sugar and mix with mixer until smooth. Pour over and spread on top layer of crackers. Keep refrigerated
