Knead 125 g butter in pieces, 75 g sugar, 250 g flour, vanilla sugar, 1 pinch of salt and egg first with the dough hooks of the mixer, then with your hands to a smooth dough. Cover and chill for about 30 minutes.
Grease the baking tray. Preheat oven (electric cooker: 200 °C/circulating air: 175 °C/gas: see manufacturer). Roll out the dough on a little flour in a rectangular shape (approx. 20 x 32 cm) and place on the baking tray. Bake for 8-10 minutes.
Let it cool down.
Roughly chop the macadamias. Melt 225 g sugar. Add 2 tablespoons butter and cream. Simmer at low heat stirring for 4-5 minutes. Stir in both kinds of nuts. Spread on the shortcrust pastry, let it cool down for about 30 minutes.
Coarsely chop the chocolate coating and melt in a hot water bath. Cut the nut lengthwise into 5 strips, then into about 8 triangles each. Dip the edges of the nut corners into the chocolate coating and let them dry.