Available for a limited time, the Thin Mints Frosty features a Chocolate or Vanilla Frosty with a Thin Mints-inspired swirl. The swirl adds a "minty-chocolatey, crumbly, cookie butter texture" to each Frosty.
Thin Mints are the Girls Scouts' best-selling cookie flavor. They're crispy chocolate cookies dipped in a mint chocolaty coating.
Photo via Wendy's.