Spring Linzers

for the cookies: 230 g butter 150 g sugar 1 egg 1 tsp pure vanilla extract 300 g flour 5 g baking powder 110 g hazelnuts, finely ground for the filling: apricot jelly Nutella prepare the cookies: 1. Toast the hazelnuts for 3-5 min in a hot oven (160C). 2. While hot, rub the hazelnuts in a towel to remove the skin. Let them cool completely. 3. Grind the hazelnuts in a blender with one third of the sugar. 4. Sift the flour and baking powder in a bowl. 5. Add the hazelnut mixture. Stir. 6. Beat the butter until creamy. 7. Add the rest of the sugar. Beat until very light. 8. Add the egg. Beat until well combined. Add the vanilla extract. 9. Add the whole quantity of the dry ingredients. Beat very slowly for 1-2 min. 10. Divide the dough in two. Roll each part between sheets of parchment paper or wrapping foil. Refrigerate for two hours. 11. Flatten the dough more. Cut out cookies in the desired shape. Cut out the centres of half of the cookies. 12. Ba...