The term ICE-CREAM EXTRA, PERHAPS can be solved by two crossword solutions: OREOS (5 letters) and OREO (4 letters). Oreos are a type of sandwich cookie made by Nabisco, consisting of two chocolate wafers with a sweet cream filling in between. The Oreo cookie was first introduced in 1912 and has since become one of the most popular cookies in the world. The Oreo cookie is also available in a variety of flavors, such as mint, peanut butter, and birthday cake. The Oreo cookie is often used as an ice cream topping or as a mix-in for ice cream sundaes.