Cookies with Marmalade recipe

Ingredients:
220g flour 00
150g butter
125g powdered sugar
80g potato starch
3 medium egg yolks (50g tot. Of yolk)
1 sachet of vanillin
Jam to taste for the filling

Indications:
In a bowl, mix the flour, starch, powdered sugar and vanilla.
Then add the butter and form a buttery mixture.
Add the egg yolks and work everything until you have a homogeneous mass.
Leave in the fridge for 2 hours.
Then stretch the dough, form the cookies and bake at 160º for 15/16 minutes.
Fill and serve these delicious cookies.