Pre-heat your oven to 160 degrees celsius and line two trays with baking paper.
Place the plain flour, baking powder, cocoa, caster sugar and almond meal into your Thermomix bowl and mix for 5 seconds, speed 5.
Scrape down the sides of your bowl and add the eggs and vanilla extract and mix for 10 seconds, speed 4.
Using the kneading (interval) function, mix for 1 minute before adding the white chocolate chips and kneading for a further 1 minute or until a dough has formed.
Place the dough onto a Thermomat (or your bench) and divide into two even pieces. Use your hands to shape into a log and gently flatten. Place the logs onto one of your baking trays (making sure you leave at least 10cm between them as they will expand) and bake for 35 minutes.
Carefully remove from the oven and allow the logs to completely cool before slicing into 5mm pieces and placing onto your baking trays.
Bake for a further 12 - 15 minutes or until crisp.