Place a breakfast bowl on top of TM lid and weigh in icing sugar, put aside
Place separate breakfast bowl on top of TM lid and weight in extra caster sugar, put aside
Preheat oven to 180 degrees fan forced, and line two large baking trays with baking paper
Place hazelnuts and chocolate into TM bowl and chop 4 seconds / speed 6, stir mix around and repeat 2 seconds / speed 5 (you still want some little chunks so don’t over process)
Add sugar, cocoa powder, cinnamon, salt and bi-carb soda and mix 10 seconds / reverse / speed 3
Add egg whites and vanilla and blend 10 seconds / reverse / speed 3, scrape around bowl and repeat 10 seconds / reverse / speed 3 (mix will be stiff and sticky)
Remove mix to a separate container for easier portioning
Press a 20g tablespoon into the mix, then use a teaspoon (so you don’t dirty your hands) to push the dough off the spoon into the bowl of caster sugar and roll into a ball (the caster sugar will provide a coating so the mix won't stick to your hands)
Immediately drop the ball of dough into the icing sugar and coat liberally
Place the ball of dough onto a baking tray and continue with the rest of the mix, leaving 4cm between each cookie for spreading, until you have finished with the dough (you should get 22 cookies from the mix)
Bake trays one at a time
Place first tray into oven and bake for 10 minutes, turn tray around and continue for a further 6 minutes (16 minutes total will give you a crisp exterior with more softness in the middle), or 8 minutes (18 minutes total will give you a crisp exterior with more chew in the middle)
Remove first tray from oven and continue process with the second tray
Allow cookies to cool for 30 minutes before removing to a cooling rack to cool completely
Store in an airtight container for up to a week