Grandma's Cookies

Method

1. Combine 220g all-purpose flour and 90g powdered sugar.
2. Add the zest of 1 lemon and 3g baking powder.
3. Add 90g butter and mix until crumbly.
4. Add 1 egg and knead until a smooth dough forms.
5. Wrap the dough in plastic wrap and refrigerate for 15 minutes.
6. Lightly flour the work surface and roll out the dough.
7. Sprinkle 50g pine nuts over the dough and press them in with the bottom of a glass.
8. Cut out cookies.
9. Place the cookies on a baking sheet lined with parchment paper and bake in a preheated static oven at 180°C (350°F) for 15 minutes.
10. Heat 300ml milk.
11. In a saucepan, combine 3 egg yolks, 65g sugar, and 30g cornstarch.
12. Add 1 teaspoon vanilla extract and whisk.
13. Add the milk while stirring.
14. Continue stirring and cook until the pastry cream thickens.
15. Cool the pastry cream by placing the saucepan in a bowl of cold water.
16. Fill the cookies with the cream.
17. Dust with powdered sugar and serve.