Are you feeling a bit frosty? Everyone loves Wendy’s popular frozen treat — the Frosty. Even more so, now that the fast-food chain has introduced seasonal flavors on the menu. And, this spring, the flavor of the season is Thin Mints. The limited-time flavor combines the Classic Chocolate or Vanilla Frosty, swirled and topped with a rich, minty cookie crumble sauce — inspired by the flavor of Girl Scout Thin Mints.

Photos: Wendy’s
On March 12, 2025, Wendy’s is giving fans a FREE small Frosty with any purchase at participating locations. Choose the Thin Mints Vanilla Frosty or Thin Mints Chocolate Frosty. (The deal also works on other flavors.)
The sweet offer is only available for Wendy’s Rewards members via the Wendy’s site or app. Join Wendy’s Rewards here.
A small Frosty is regularly $3.39, so the savings are definitely sweet! Price may vary by location.
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I wanted to try a Thin Mints Frosty as my free Frosty Jr. with a physical key tag and purchase recently, but they refused, saying they did not have the Thin Mints Frosty in the Junior size. I later checked my Wendy’s app and they were right. So this is a chance to try the Thin Mints Frosty at an overall discount. There is also some game on the Wendy’s app about trying to complete a pipe system for prizes, but one also gets a sweepstakes entry simply for trying.