Cornerstone Cookie is making the world a better place, one cookie at a time. Its thick and chewy choc-chip cookies are sensational – and 100 per cent of profits will go to your choice of two charities.

The small business began its life as a for-profit enterprise. But following the world-changing events of last year, owners and life partners Laura Kirk and Michael Synge decided to adopt a not-for-profit model. From every $25 box sold, $20 goes to either Action Against Hunger or mental health charity Black Dog Institute – the customer gets to decide which one. That extra $5 covers ingredients. Some months 100 per cent of the proceeds are donated to a not-for-profit that really needs it.

“In August, we focused completely on Black Dog Institute because we’re aware that mental health issues are just getting worse and worse during lockdown,” Kirk tells Broadsheet. “It’s been amazing to see people really come together during lockdown and support one another.”

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Cornerstone has smashed its goal of donating $500 to each charity and is on its way to raising a combined $2000. Synge bakes the cookies at Zucchero Cafe and Bar in Artarmon, where he works as head chef. His boss allows him to use the cafe’s oven and to use the space for distribution. (You can get single Cornerstone cookies at the cafe; those sales don’t go to charity.)

And while the duo’s commitment to helping others is admirable, it wouldn’t achieve much if the biscuits weren’t great. (They are.) The thick double-chocolate-chunk cookies are crisp on the outside with a satisfyingly gooey centre. Every bite is packed with melty white and milk-choc chips, and the cookies are finished with a sprinkle of sea-salt flakes for salty-sweet balance. There are occasional weekly specials – last week’s was Biscoff.

The duo intends to continue spreading love and support via the medium of cookies for as long as they can.

“I have always jumped at any opportunity to make others happy, and cookies seemed to do just that,” says Kirk. “The response has been more than I ever dreamed it would be. Sometimes it leaves me speechless.”

Order by messaging Cornerstone Cookie on Instagram. Pick up is available from Zucchero Caffe Bar in Artarmon or delivery is available within a five-kilometre radius, for an extra $7, which is also donated to the charities.