Roast the almond in oven at 160C, bake for 10 minutes. Let it cool completely.

Cream the butter and sugar together, then add in egg, mix well.

Sieve in flour and baking powder, mix until well combine. Add in almonds and pistachios, mix well to form a dough.

Sprinkle some flour on the worktop, divide the dough into 2, roll into cylinder, press a little bit. Brush some egg wash on top, then pop in preheated oven at 180C for 30-35 mins. （If the dough is too sticky, you can add some more flour)

Let it cool for 5 mins, then use a sharp knife to cut to diagonal slice (about 2cm thick) . Place it on parchment paper, then pop in oven again. Bake at 170C, 7 to 8 mins each side or until golden. Enjoy!