Costco Australian Tim Tams: The Viral Chocolate Treat Taking Over the US

If you’ve been scrolling through TikTok or Instagram lately, you might have noticed a chocolatey sensation capturing the hearts (and taste buds) of foodies across the United States. Enter Australian Tim Tams—the iconic chocolate-covered biscuits that have officially landed at Costco warehouses nationwide.

For years, these decadent treats were elusive, available only through specialty importers or international food stores. Now, Costco is bringing the taste of Australia to the masses in massive bulk packages, sparking a nationwide craving for these malted chocolate delights.

What Exactly are Tim Tams?

Produced by the legendary Australian food giant Arnott’s, Tim Tams are not your average cookies. The Original Tim Tam consists of two layers of malted chocolate biscuits held together by a creamy cocoa filling, all enveloped in a smooth, rich chocolate coating.

Since their debut in Australia in 1964, they have evolved from a local favorite into a global obsession. At Costco, members can now snag a six-sleeve box containing 66 cookies for approximately $14, making it easier than ever to stock up on this international delicacy.

The Viral Phenomenon: How to do the “Tim Tam Slam”

It’s not just about the taste; it’s about the ritual. The arrival of Tim Tams at Costco has reignited interest in the “Tim Tam Slam,” a traditional Australian way of consuming the biscuit that has gone viral on social media.

Here is how you perform the perfect Tim Tam Slam:

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• Step 1: Take a Tim Tam and bite off opposite corners of the chocolate coating.
• Step 2: Use the biscuit as a straw to sip your favorite hot coffee, tea, or hot chocolate.
• Step 3: As the liquid soaks into the biscuit, the chocolate begins to melt.
• Step 4: Eat the softened cookie quickly before it dissolves!

This unique experience has been showcased by celebrities like Succession star Sarah Snook on The Tonight Show Starring Jimmy Fallon and actress Isla Fisher on The Kelly Clarkson Show, further fueling the hype among American consumers.

Why Costco is Betting Big on International Flavors

The strategic rollout of Costco Australian Tim Tams is part of a larger trend. By offering exclusive international brands and limited-time items, Costco differentiates itself from traditional grocery chains and other warehouse clubs.

This move aligns with the retailer’s broader commitment to providing exceptional value. While introducing exciting new snacks, Costco has also been quietly rolling back prices on several Kirkland Signature products—including chicken wings and chocolate-covered almonds—to help members stretch their grocery budgets.

Final Thoughts

Whether you are a longtime fan of Arnott’s biscuits or a curious foodie looking to try the Tim Tam Slam for the first time, the bulk availability at Costco is a game-changer. Combining viral social media appeal with unbeatable warehouse pricing, these Australian treats are proving that some flavors truly are universal.

Have you tried the Tim Tam Slam yet? Head to your nearest Costco and join the chocolate revolution!