Soak the dates in warm water for 10 minutes, then drain.
Add the sunflower seeds to the Thermomix bowl and grind for 10 sec/speed 9.
Add the softened dates and mix for 5 sec/speed 7. Scrape down the sides of the mixing bowl with a spatula, then mix again for 5 sec/speed 7.
Add the remaining ingredients and mix for 5 sec/speed 5. Scrape down the sides of the mixing bowl with a spatula, then mix again for 5 sec/speed 5.
Shape the mixture into walnut-sized balls and refrigerate for half an hour before eating.
Notes
Dates: If you buy pitted dates, there is a slight chance a stone fragment is left inside. It's worth checking every date as this happened to me, and I almost broke a tooth!Storage: Keep the bliss balls in an airtight container in the fridge for up to a week.