How to make
Beat the egg along with the sugar using a blender or mixer.
Add the rest of the products, without the walnuts and mix well.
Leave the resulting mixture in the refrigerator for about 30 minutes.
Then form small balls from it and roll them in crushed walnuts.
Arrange the biscuits in a tray onto baking paper, by leaving a space between them and bake in a preheated oven at 390°F (200°C), until they're fully baked.
The soft butter biscuits with walnuts are ready.
