In celebration of its fourth birthday, Crumbl Cookies, the nation’s fastest-growing gourmet cookie delivery and takeout company, has launched a new Golden OREO cookie in partnership with Mondelēz International.

The new menu item is stuffed with white chocolate chips and pieces of Golden OREO and topped with vanilla cream cheese frosting, Golden OREO crumbs and a mini Golden OREO cookie. This special flavor will be available for this week only, now through Saturday, October 2.

“We’re thrilled to be partnering with Mondelēz International once again to feature a new OREO concept. With the Golden OREO, we wanted to take the successful flavor profile of our most popular LTO and flip it on its head,” says Chelsea Currier, Crumbl, vice president of research and development. “This week is extra special for us as we will be celebrating four years since Crumbl launched our first store in Logan, Utah. We’ve put a lot of thought into the cookies we’re introducing this week, all of which feature our favorite iconic and nostalgic flavors.”

Crumbl says that in the past its cookies featuring Mondelēz brands like SOUR PATCH KIDS and OREO have been their most successful collaborations. The Chocolate featuring OREO, which also happened to be the first OREO cookie collaboration at Crumbl, was the bakery chain’s first cookie to outsell the classic chocolate chip.

“We’re super excited about this new collaboration with Crumbl,” says Susan Roney, Mondelēz International, key account manager for foodservice. “The Golden OREO has always been one of our most popular cookies, so we’re looking forward to introducing this new flavor concept to fans of Golden OREO and Crumbl. I personally can’t wait to taste it.”