There will be a secret Sandwich Cookie that Crumbl will offer at all locations during the week of September 1-6, 2025. This cookie will be the Oreo x Reese’s Sandwich Cookie.
There is little argument to be made that the “sandwich style cookies” are the most popular and viral cookies at Crumbl. It has been interesting to see these cookies show up as testers or mystery cookies but not on the main menu of the last year. In 2023, there has been no Oreo Mallow Sandwich on the main menu. This has been a popular cookie as a Mystery Cookie which has caused diehard fans to drive hours to get this popular mallow sandwich cookie. Here are the “Mallow Sandwich Cookies” at Crumbl so far:
Cereal Milk Sandwich ft. Fruity Pebbles Cereal
@eatingwithece Part 2: @Crumbl Cookies ‘s MALLOW SANDWICH FT. @OREO 🖤✨🤍 #mallow #sandwichcookie #oreo #oreocookies #crumbloreo #marshmallow #marshmallowcookies #crumblcookies #crumbl #crumblreview #crumbltiktok #crumbltasteweekly #crumblcookiesoftheweek #crumblcookie #crumblesqueen🥰💝 #crumblflavors #crumblcookiesmn #crumblcookiesreview #crumbltaste #crumblcookieflavors #cookiereview #cookies #cookiesoftiktok #crumblecookie #crumblecookiereview #crumblecookies #crumblrun #cookierun #muckbang #muckbangeatingshow #foodreview #reviews #honestreview #honestcrumblreview ♬ original sound – Ece Kremers | Crumbl Reviews