By Anto Cocagne and Aline Princet
In a large bowl, mix the flour, sugar, cinnamon and salt. Split the vanilla bean lengthways and scrape the seeds into the bowl.
Add the softened butter and mix until combined. Add the eggs and continue to knead together.
Add the milk and mix until a dough forms that is not too sticky, adding a little extra flour if necessary. Leave to rest in the fridge for