ingredients:
+For about thirty cookies
°210 g flour
°80 grams of powdered sugar
°1 sachet of vanilla sugar
°200 gm soft butter
°1 egg white
°pinch of salt
*Preparation:
First of all start working on the whipped butter with a paddle or mixer (or kneading like me)
Then add the sifted powdered sugar, vanilla sugar and salt
(Feel free to lift the block with the spoon and restart the robot to incorporate the butter and sugars as much as possible)
Then add the egg whites and stir again
And ends with sifted flour
Enjoy !