The term 'Dunked Treat' is a popular dessert that consists of an Oreo cookie being dipped in a liquid, usually milk or cream. The Oreo cookie is a brand of sandwich cookie made by Nabisco and is one of the most popular cookies in the world. It consists of two chocolate wafers with a sweet cream filling in between them. Dunking the Oreo in a liquid makes it even more delicious and is a favorite treat for many people.