These crunchy biscuits are a twist on a classic Italian recipe. Ring the changes by substituting the pistachios with other chopped nuts.
Preheat the oven to 160C/350F/Gas 4.
Combine all the dry ingredients in a bowl, add the egg yolk and vanilla and mix well to form a dough.
Lightly knead the dough on a floured work surface until smooth then shape into a log and place on a baking tray lined with parchment.
Bake for 25 minutes, allow to cool, then cut into slices about 1cm/½in thick. Place slices onto the baking tray and bake again for 5-10 minutes.
Type the ingredients you want to use, then click Go. For better results you can use quotation marks around phrases (e.g. "chicken breast"). Alternatively you can search by chef, programme, cuisine, diet, or dish (e.g. Lasagne).
Programme catching up with the bakers from the 2014 series.