Is "cookie" a recent addition to Australian English?

I would tend to agree that 'cookie' is a recent addition to Australian English as it is to Indian English. The younger generation is more inclined to use American terms these days even in countries like Australia and India where British English has been closely followed, at least in terms of vocabulary.

Where foodstuffs are concerned, Australian English tends to be more closely related to the British vocabulary. For example, the term biscuit is the traditional and common term rather than the American term cookie. As had been the case with many terms, cookie is recognised and understood by Australians, and occasionally used, especially among younger generations. [Source]