We are teaming up with our friends at Milk Bar to bring you the best of both dessert worlds—Shake Shack’s frozen custard and Milk Bar’s iconic baked goods! For a limited time, we’ll be spinnin’ up two share-worthy shakes at Shacks nationwide:

Chocolate Birthday Cake Shake

Milk Bar B’Day crumbs and Milk Bar B’Day frosting hand-spun with chocolate cake frozen custard, topped with whipped cream and rainbow sprinkles

Cornflake Chocolate Drizzle Shake

Milk Bar Cornflake Crunch hand-spun with malted vanilla frozen custard, topped with Milk Bar chocolate fudge drizzle and mini marshmallows

As part of our mission to Stand for Something Good®, Shake Shack and Milk Bar will be donating delicious treats to The Birthday Party Project, a non-profit that brings joy to children experiencing homelessness through the magic of birthday parties.

Party like it’s your birthday

Shack fans will have the chance to win free shakes in honor of their birthday, no matter when it is! Every Friday in September, head to our Instagram Stories where we’ll be using the B’Day Randomizer to select random calendar dates. If your birthday is selected and you are one of the first 50 followers to slide into our DMs, we’ll send a discount code for you to redeem on the Shack App for a free shake!

Want to celebrate a little early?

The Chocolate Birthday Cake Shake and Cornflake Chocolate Drizzle Shake will be available in Shacks on September 3, but Shake Shack and Milk Bar fans alike can use the Shack App to snag exclusive early access to the shake duo starting August 31!