Australia’s favorite cookie just landed at Costco, sparking a buying frenzy

Jun 19, 2026, 6:47 AM | Updated: 7:23 am

Australian Tim Tam biscuits on display. (Photo: Kristian Dowling, Getty Images)

(Photo: Kristian Dowling, Getty Images)

MyNorthwest Lead Editor

The iconic Australian cookie, Tim Tam, has made its way onto Costco shelves, and members are buying boxes in droves.

Tim Tam, which come in original, white chocolate, mango and cream, and chocolate mint flavors, are cookies made of two malted chocolate biscuits covered in chocolate and filled with a creamy cocoa filling. The cookies have been dubbed the “Australian Oreo.”

“Tim Tam is NEW at Costco and I’m ALL about it! This famous chocolatey cookie is known as Australia’s favorite, and for good reason!” CostcoBuys, a popular Instagram account tracking Costco trends, stated. “Each cookie has an insanely delicious combination, including a smooth chocolatey coating, a delightful crunch, and a delicious velvety center…YES PLEASE! Tim Tam has easily become my new favorite snack, and you will LOVE it too!”

For $14, customers can get 66 of these cookies in one box at Costco. But, according to The New York Post, many Costco members are buying these cookies in bulk, “creating a frenzy that is taking over the aisles.”

Customers react on social media

“I bought five cases,” one Costco shopper said on Reddit.

“I ended up buying 8-9 cases, I believe,” another customer wrote. “Because they’re the BEST store-bought cookie ever.”

Tim Tams are also a part of an Australian tradition called the Tim Tam Slam — where you bite the opposing corners off the cookie, submerge half of it into a hot beverage (whether it’s coffee, tea, or hot chocolate), and use the cookie as a straw for the beverage.

“Once you feel the warm liquid hit your mouth, quickly pop the entire, softened biscuit into your mouth before it completely melts and falls apart,” Michael Ligier, an internet personality and James Beard Award winner, said on his YouTube account.

Several Australians have posted “how to” guides on TikTok and other social media platforms, showing how to perform the Tim Tam Slam effectively.

Follow Frank Sumrall on X. Send news tips here.

Please follow our Community Guidelines

Lifestyle

South Sound

Bates Technical College Hosts Free Dental, Denture Clinics

Originally published on South Sound. To improve access to local dental health care, Bates Technical College’s Dental Assisting and Denturist Programs hosted free dental clinics in Tacoma on July 24. Licensed dentists provided exams, X-rays, extractions, and fillings. Denture and partial repairs were also available through the Denturist program. In addition to improving access to […]

5 hours ago

425

Issaquah Apartment Community Sells for $55.1M

Originally published on 425. Seattle-based Security Properties has acquired the 134-unit Langara community in Issaquah. Hoodline reported that the property’s sale price is nearly double what it sold for in 2013. The North Issaquah community offers a mix of one- and two-bedroom apartments as well as three-bedroom townhomes, with amenities including in-unit laundry, private outdoor […]

6 hours ago

South Sound

What Do a Historic Seattle Hotel and the LeMay Collections at Marymount Have in Common?

Originally published on South Sound. The time I learned to drive a Ford Model T isn’t something I get to mention very often. Recently, that personal milestone unexpectedly became the perfect introduction to one of Seattle’s most intriguing — and historically significant — hotels: the MarQueen. It’s been a few years since I took the […]

6 hours ago

425

Major Grants to Restore Washington Branch of Dolly Parton’s Imagination Library

Originally published on 425. The Imagination Library of Washington has secured two grants intended to help revitalize its program and support its goal of providing free books to children 5 and under — a mission the broader organization has championed since singer-songwriter Dolly Parton founded it in 1995. Funding from the Roots & Wings Foundation […]

10 hours ago

425

3 Potato Salads Built for Grilling Season

Originally published on 425. Tender steak, juicy chicken, burgers and brats — just about anything you can grill goes well with one backyard cookout staple: potato salad. We asked local cookbook author and TV personality Danielle Kartes to share three of her favorite ways to take this classic summertime staple. One is crispy, one is […]

12 hours ago

Middle school students Claire Knoth and Brockton Lozano and high school student Zoie Knoth share wh...

Associated Press

School backpack overload: Heavy bags can strain kids’ bodies

Backpacks can be fashionable and functional, but they can also be too heavy — weighed down by digital devices, musical instruments, sports equipment and more. Some kids carry home a laptop or tablet and textbooks, too. It’s good to be prepared, but kids who walk to school or participate in extracurricular activities may be lugging […]

16 hours ago