Buy One, Get One ShackBurgers in App or Online Through January 2

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Finish this year or start off the next with this great buy one get one offer from Shake Shack!

Now through January 2nd, 2022, you can get a second Shack Burger for free when you order using the Shake Shack app or website with the promo code THANKYOU21.

ShackBurger’s are the restaurant’s signature sandwich, made with a pure beef patty, topped with cheese, lettuce, tomato, and secret ShackSauce, served on a toasted potato bun.