She is well known for her clear, straightforward recipes, and she would undoubtedly appeal to a wide range of fete-goers.
"This year, there will once again be an extensive variety of stallholders offering a superb array of artisan and boutique clothing, homewares, gifts, foods and beverages," said Ms Haynes.
"Having someone as high profile as Allyson join us, who is also so personable and down to earth, is a natural fit for the fete. We have no doubt that the edition of cooking demonstrations will be incredibly popular and the food produced will be delicious."
Demonstrations will be held at 11am, 12 noon, 1pm and 2pm, with pre-booking essential for the 20 spaces available at each time slot.
The cost is $10 per person and bookings can be made by emailing waihua.station@gmail.com.
The Waihua Christmas Fete has a gate entry cost of $10 per person. Children under 12 are free, all proceeds going to Starship Children's Hospital.