Costco shoppers – Costco stores across the U.S. have begun selling Tim Tams—Australian, chocolate-coated biscuits made by Arnott’s—pushing a viral snack tradition into American aisles. The six-sleeve boxes of 66 cookies are drawing attention online as shoppers share photos, and
For a lot of Costco shoppers, the excitement doesn’t start at the checkout—it starts when they spot the shelf they didn’t expect to see.
Across U.S. warehouses. shoppers are snapping up Tim Tams. the chocolate-covered biscuits made by Australian food giant Arnott’s. now available in bulk packages. Online. photos of stocked aisles are spreading quickly. along with discussion about the snack itself and the ritual many people can’t stop talking about.
The original Tim Tam is two malted chocolate biscuits layered with a cocoa-flavored filling, then coated in chocolate. Arnott’s has sold the brand in Australia since 1964, where it became a staple—and where it also built a loyal following far beyond the home market.
Now Costco is offering American consumers an easier path to that following: Tim Tams are sold in six-sleeve boxes containing 66 cookies for about $14. For shoppers, that price and format matter. It turns a treat that many previously found only through specialty retailers and international food stores into something more like a routine buy.
A big part of the momentum is the way social media turns snacks into moments. Many first-time buyers say they’re getting pulled in by the “Tim Tam Slam. ” a popular Australian tradition where consumers bite off opposite corners of the biscuit. use it as a straw to sip coffee or tea. and then eat the softened cookie before it dissolves.
The technique has spread through TikTok videos, and celebrities have helped put it on a mainstream stage. Australian actress Isla Fisher previously showcased the Tim Tam Slam on “The Kelly Clarkson Show. ” while “Succession” star Sarah Snook demonstrated the ritual during an appearance on NBC’s “The Tonight Show Starring Jimmy Fallon.”.
The result is a snack that’s not just selling well—it’s arriving with a ready-made story. And that story connects to a wider shift: international food brands are finding new audiences in the U.S., especially when a tradition travels with the product.
For Costco. this rollout also fits a strategy the warehouse giant has been leaning on more and more—offering members items they may not find elsewhere. Costco has increasingly used exclusive products. limited-time offerings. and its Kirkland Signature private-label brand to differentiate itself from traditional grocery chains and other warehouse clubs.
The timing is especially noticeable because the retailer continues to tie attention to value. Costco has recently highlighted price reductions on several Kirkland Signature products. including chicken wings. chocolate-covered almonds. and golf balls. as executives reiterated their goal of lowering prices when possible. That focus on stretching grocery budgets sits alongside the Tim Tams buzz. giving shoppers two reasons to feel like they’re getting more: a viral import at a bulk-friendly price. and a store that’s signaling it’s still watching costs.
On top of the product push, Costco has also invested in operational upgrades—expanded digital membership capabilities and checkout technology designed to improve transaction speeds and enhance the customer experience.
For now, the Tim Tam shelves are doing what Costco shoppers know well: turning browsing into grabbing, and curiosity into a full cart.
Costco Tim Tams Arnott's Australian snacks viral food Tim Tam Slam Kirkland Signature shopping deals social media