Line a small slice tin with baking paper. We actually used a loaf tin so that the slice was deep along with the chocolate. YUM.
Place ANZAC biscuits into the Thermomix bowl. Crush 3 sec/speed 6. Set aside.
Place chocolate, butter and condensed milk into the Thermomix bowl. Melt 5 min/60°C/speed 2.
Add the crushed biscuits, vanilla and salt. Combine 6 sec/speed 5.
Pour into prepared tin.
Place remaining chocolate into the Thermomix bowl. Chop 5 sec/speed 6. Add coconut oil and melt 2 min/60°C/speed 2. Spread over the slice. Refrigerate for at least 2 hours before cutting into cubes. It is hard to eat just one piece of this. Be warned.