Sprinkles Cupcakes fans will be glad to know that through Oct. 31, they can buy a boxed dozen that will guarantee a frosting-filled Halloween.

The “BOO” box features three of the bakery’s most popular flavors: vanilla milk chocolate, black and white, and red velvet — plus limited-edition caramel apple cupcakes. The cupcakes come decorated with cute little ghosts, too.

The special caramel apple cupcake is a spiced apple cake studded with chunks of Granny Smith apples, and topped with a big blob of buttery caramel cream cheese frosting.

The cupcakes are $3.25 each; $36 for a dozen. The Bay Area’s only Sprinkles location is at the Stanford Shopping Center in Palo Alto.