As we approach Halloween season, Chicago’s XO Marshmallow is celebrating by putting a spooky twist on the traditional Christmas Advent calendar.

The marshmallow café’s first Halloween Advent calendar comes complete with limited edition flavors, new flavors and its Halloween signature Boo Thang marshmallow ghosts. Customers can start on the 1st of the month, or the 19th if they want to lead up to Halloween directly. Each marshmallow is inspired by a favorite fall candy, with included mallows listed in the flavors tab.

Among the flavors available are October’s Marshmallow of the Month Chocolate Caramel (a Twix rendition), Pumpkin Spice, Candy Corn, Halloween Sprinkle (think a fall cookie with vanilla butter extract and Halloween sprinkles), plus eight more.

Each marshmallow is made with natural flavoring extract, allowing them to be gluten and peanut/tree-nut free. The Halloween Advent calendar retails for $36.95 (with free shipping). Pre-ordering is available now, with orders shipping between now and September 26.