Serves: 4 people Difficulty ': Easy Preparation time: 40 minutes INGREDIENTS 120g. 50g of butter. vanilla sugar 150gr. flour more 'than is necessary for dusting 3 tablespoons walnut (walnut liqueur) 300g. Walnut 100gr. sugar PROCEEDINGS -------------------------- In a bowl mix 100g. of butter with the vanilla sugar, gradually add the flour and a tablespoon of liqueur walnuts worked together until dough is firm and smooth.