Obama Reveals Favorite Girl Scout Cookie At a town hall in Cincinnati, Ohio, just now, a young Girl Scout named Julie asked the president what his favorite Girl Scout cookie is. He said thin mints. A fan of Peanut Butter Patties booed this announcement, which the president laughed about. The Thin Mint is the most popular Girl Scout Cookie. Q: What are the best-selling Girl Scout Cookies? A: The biggest sellers are: Thin Mints®: 25 percent Samoas®/Caramel deLites®19 percent Peanut Butter Patties®/Tagalongs®: 13 percent Peanut Butter Sandwich/Do-si-dos®11 percent Shortbread/Trefoils®: 9 percent The other varieties combined account for the remaining 23 percent.