Chocolate hazelnut sandwich cookies

Chocolate hazelnut sandwich cookies are traditionally called “paratroopers”, a cookie of my childhood, that literally melts in your mouth. Well, my dad loves baking and eating cookies, so here is his way of doing it.

Whisk 4 egg whites until firm. Add the 150gr of icing sugar and continue to whisk for a few minutes. If you want you can add some lemon juice or drop of lemon essential oil. Fold in 150gr of finely grounded roasted hazelnuts and a 1 tbsp of breadcrumbs.

Use two teaspoons to spoon the mixture onto trays covered with nonstick baking paper. Put in the preheated oven at 120°C. When they get brownish, lower the heat to 50°C and leave them to dry for an hour.

In the meantime make the filling. Mix 50gr of butter with 50gr of icing sugar. Add one whole egg and 50gr of melted dark chocolate.

Now stick the cooled cookies together with the chocolate filling.

Mind you, this is a traditional recipe, the original chocolate hazelnut sandwich cookies were made with raw eggs. In case you are not comfortable with it, use two egg yolks instead of a whole egg for the filling, and make sure to precook them.