The House with a Clock in Its Walls, from Universal Pictures, is a new film that hits theaters on Friday, September 21. Through a partnership with the studio, Sprinkles Cupcakes is promoting the new film with a limited-time product.

Timeless Magic cupcakes consist of Sprinkles’ Black Velvet cake, filled with Pop Rocks candy and sugar pearls, topped with purple vanilla buttercream frosting, finished with gold sanding sugar and The House with a Clock in Its Walls custom dec.

The limited-edition treats are now available at most Sprinkles Cupcakes locations nationwide, through Wednesday, September 26. The only locations where they won’t be available are Sprinkles Disney Springs, DT Disney, and Penn Station.

Based on a beloved children’s classic, The House with a Clock in Its Walls stars Jack Black and two-time Academy Award winner Cate Blanchett and is directed by Eli Roth.