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September 1, 2026
Shake Shack Celebrates Halloween with New Reese's® Peanut Butter Cup Shake!
This fall, Shake Shack is starting spooky season early on September 1st with the new Reese's® Peanut Butter Cup Shake – turning Halloween’s top treat* into a sweet and salty crackable shake available nationwide for a limited time. It’s a Halloween treat worth adding to the rotation all season long, no costume required.
What is the Shake Shack Reese's ® Peanut Butter Cup Shake?
With no tricks and all the treats, our newest crackable shack features vanilla frozen custard hand-spun with Reese's® Creamy Peanut Butter and fudge sauce, poured in a crackable dark chocolate shell, and topped with whipped cream, Reese's® Mini Peanut Butter Cups and chopped Reese’s Pieces®.
Where to get the Shake Shack Reese's ® Peanut Butter Cup Shake
We are bringing The Shake Shack Reese's ® Peanut Butter Cup Shake across the country, it is available at all U.S. Shacks (excluding in stadiums, racetracks, roadways and airports).
Don’t miss out on this sweet treat! Order ahead on the Shack App or head to your local shack.
*(Source: Retailer Survey 2025)