Mix the flour, starch, sugar, vanilla sugar, salt, 1 egg + 1 egg yolk, margarine - knead the dough (flour may need a little more, the dough should be soft and not stick to hands). The finished bun to wrap and send in the freezer for 30 minutes. After cooling, divide the dough into 4 parts, each part into 6 pieces. From a piece of dough make a ball, flatten it in your hand,

On top put half of a walnut. Cookies lay on the sheet far enough away from each other (increase in baking). Bake in a preheated 200*C oven for 15 minutes (lightly browned).

While cookies are cooling, whip the protein, gradually adding powdered sugar, until smooth homogeneous mass. Of the culinary syringe to apply the frosting "rays" on the cookies. The icing hardens quickly.

Crumbly delicate cookies with a walnut and very elegant. Enjoy your tea!

I still have half a Cup of icing, tomorrow will have to think of something...