Step 2:
1) put the flour into a large mixing bowl and rub in the butter until the mixture resembles breadcrumbs. Add sugar, egg yolk and vanilla and mix to form a dough. Step 3:
2) knead the dough lightly on a floured work surface until smooth. Shape dough into a ball, wrap in cling film and chill in the fridge for 30 minutes. Step 4:
3) heat the oven to 180 degrees celsius. Grease two baking sheets. Step 5:
4) roll out the dough on a flour surface until approximately 5mm thick, then cut into rounds with a 6cm cookie cutter. Step 6:
5) place cookies on baking sheets and bake for 12-15 minutes until pale golden. Cool for a few minutes on baking sheets then transfer to a wire rack to cool completely. Step 9:
1) beat the butter until soft and then beat in the icing sugar. Step 10:
2) spread a little jam on half of the cookies, then place a small blob of the icing on top. Gently press the remaining cookies on top. Step 11:
3) sift over a little icing sugar to finish! 