- 90g/3¼oz plain flour
- 1 tsp baking powder
- 55g/2oz sugar
- 35g/1¼oz pistachios
- 25g/1oz dark chocolate chips
- 1 free-range egg yolk
- ½ tsp vanilla paste
- 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.