The term MCFLURRY COOKIE is a combination of two popular desserts. The first part, McFlurry, is an ice cream-based dessert created by McDonald's. It consists of soft serve ice cream mixed with various candy, cookie, or other ingredients. The second part, Cookie, is a type of sweet baked treat usually made from flour, sugar, and butter. The crossword solution for this term is OREO, which is a brand of sandwich cookie made by Nabisco. It consists of two chocolate wafers filled with a sweet creme filling.