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

425

Brandy Brown’s Style is Designed for Life

Originally published on 425. The graphic designer brings a practiced eye for color and composition to her wardrobe, while honoring the women who taught her how to show up.

9 hours ago

425

A Supper Club Program Designed for Connection

Originally published on 425. An intention to create connection was what inspired Christina Conrad, food coach and creator of Foodie with a Life, to launch her Supper Club program, which is described as dinner parties designed for modern life.

9 hours ago

South Sound Business

Lead + Follow: Wren & Willow and Wren’s Nest Baking Co.’s Laureen Skrivan

Originally published on South Sound Business. This month’s edition of Lead + Follow — a Q&A section dedicated to further understanding the personal and professional mindsets of area business leaders — features Laureen Skrivan, owner of Wren & Willow and Wren’s Nest Baking Co.

9 hours ago

425

Jackson House’s Decadent Dungeness Crab Cheesecake is a Must-Try

Originally published on 425. The restaurant’s conversation-worthy version comes with fresh Dungeness crab and butter-poached leeks.

9 hours ago

FILE - The sun shines on golden aspens, Sept. 22, 2021, on the first day of fall, in Eagle County, ...

Associated Press

Day and night get equal billing on Tuesday. A guide to the fall equinox

The fall equinox is Tuesday, when light and darkness split the day evenly. It marks the beginning of fall for the Northern Hemisphere and the beginning of spring in the Southern Hemisphere. On the equator, the sun will be directly overhead at noon. Equinoxes are the only times when both the north and south poles […]

9 hours ago

Freshly harvested grapes are piled in a storage container at Berryhill Family Vineyards in Clements...

Associated Press

California farmers are struggling to sell grapes as demand for wine drops

LODI, Calif. (AP) — It’s harvest time in California wine country, but many growers are struggling to sell their grapes as changing drinking habits have caused demand to plunge. The decline is forcing some growers to tear out vineyards that their families have grown for generations. Wine sales have decreased by more than 20% over […]

11 hours ago