Place yeast warm water and honey into Thermomix bowl and warm for 4 minutes at 37oC on speed 1.
(This can be achieved by mixing the ingredients and allowing to stand for a few minutes to bubble...if you are so unfortunate as to not have a Thermomix...will I ever shut up about that???)
Add flours, salt and nuts and mix quickly on speed 7, then with lid in closed position use Interval setting to knead for 2 minutes. (Add more water if necessary.)
Oil a Silpat mat or similar and wrap the dough in it whilst you make the tart ingredients.