Iced Oatmeal Cookie

oatmeal cookie
In the United States and Canada, a cookie is a small, flat-baked treat, usually containing fat, flour, eggs and sugar.
An oatmeal cookie is an alcoholic drink named for its taste, which is reportedly similar to an oatmeal cookie. It can be served both layered and mixed, depending on the taste of the bartender.
cookies containing rolled oats

iced
(of a drink or other liquid) Cooled in or mixed with pieces of ice
(icing) frost: the formation of frost or ice on a surface
(of a surface or object) Covered or coated with ice
(icing) (ice hockey) the act of shooting the puck from within your own defensive area the length of the rink beyond the opponent's goal
(of a cake or cookie) Decorated with icing
(icing) frosting: a flavored sugar topping used to coat and decorate cakes