Soak flaxseeds in water for 5 minutes until you have a gel-like mixture. Meanwhile, blitz or mash the avocado into a paste.
In a bowl, combine the oats, baking powder, matcha, a pinch of salt, avocado, "flax-egg", and maple. Work all into a compact dough.
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{{/ items}} {{^ items}} {{/ items}}Add the chocolate chips to the cookie dough.
For each cookie, pinch off a small handful of dough and flatten it down on a baking tray.
Bake the cookies for 12 minutes at 200°C (390°F) and leave them to crisp up onto a wire rack before serving.