In what is likely to be a fiercely contested market, Chocolate Digestives are the early favourites, at 7/1.
The surely superior Chocolate Hobnobs are rated as an 11/1 shout at the time of writing, with only Shortbread Fingers and Custard Creams trading shorter, both at 10/1.
Richard Osman has opened a can of worms by allowing Jaffa Cakes - emphasis on cakes - in the a market on biscuits but they can nevertheless be backed at 20/1 to win.
Looking down the market, there looks to be a bit of value in Betfair HQ favourite Choco Leibniz at a punchy 50/1.
Voting starts at 19:00 on Richard's Twitter feed - @RichardOsman.
All the latest prices are here