I was pretty psyched when Wendy’s launched a tropical Pineapple Under the Sea Frosty last summer as part of a new Spongebob-themed Krabby Patty Meal. But the fast food chain’s latest treat is even more nostalgic.

Both the chocolate and vanilla variations have the same swirl of Thin Mint flavor, in "a rich, minty cookie crumble sauce."

The Thin Mint Frosty incorporates the flavor of the Thin Mint Girl Scout cookie into a Wendy's chocolate or vanilla Frosty. The Frosty has a minty-chocolatey, crumbly, cookie butter texture swirl around the cup. The presentation will be similar to what Wendy's did with the SpongeBob Pineapple Under the Sea Frosty.