Isler Cookies,

This is a famous cookie recipe mostly baked during holiday time in Europe.

For cookies

300 g flour
250 g unsalted butter, soften
125 g ground nuts walnuts and almonds
125 g powdered sugar

1 backing powder
1 Tbsp rum
a pinch of salt


For the filling

2 egg yolks

120g sugar

1 vanilla sugar

30g flour

1 tablespoon cocoa

150g  milk 

200g unsalted butter

Filling Preparation

In a small sauce pan mix all the above ingredients except butter, put on the slow heat and mix continuously until it start to thickens and boil, remove from heat and let it cool. Once the cream is cooled add the butter little by little ( butter should be creamed in advance and soft prior adding to the cream)

Glaze

200 g chocolate melted with little butter and water.

Method for cookies preparation

1) Cream soften butter with powdered sugar. Do not over-mix. Incorporate flour, ground nuts, pinch of salt and rum into the butter-sugar mixture until the whole thing come together. Chill in fridge for  at least 1 hour.

2) After an hour, roll out the pastry until the thickness of 3 mm. Use round cookie cutter to cut pastry. Cut until all pastry are used. Baked for 10-12 mins at 175°c

3) Let cookies cooled. Meanwhile, melt chocolate to get ready for assembly.

4) Sandwich cookies with preferred cream and top with chocolate glaze

5) Store cookies in a tin can and place in a cool place at least overnight, to allow the flavour to develop.