Cut the margarine in small pieces and pour them in a big bowl.
Add the flour, sugar, almond flour, vanilla sugar, egg yellows and the salt in the bowl and mix it all together thoroughly.
Form two long rolls of the dough, and place them in the fridge for two hours.
Take out the rolls from the fridge. Cut the rolls in approx. one centimeter thick. Shape the pieces in to half-moons and place them on a baking paper.
Start the oven at 180 degrees Celsius.
Place the cookies in the middle of the oven for fifteen minutes.
Take out the cookies from the oven and continue to keep them on the baking sheet.
To make the topping mix sugar and icing sugar in a small bowl.
Put the topping in a sieve and sprinkle it on top of the half warm cookies.
Let the cookies cool down before serving them.