Chocolate cake with nuts

Ingredients:
-200g(7.05 oz) of flour
-200g(7.05 oz) of sugar
-4 egg whites
-25g(0.88 oz) baking powder
-200g(7.05 oz) of pitted walnuts
-200g(7.05 oz) of dark chocolate
-200g(7.05 oz) of butter
-25g(0.88 oz) powdered sugar with vanilla
Preparation:
1) Melt the butter and chocolate in a "bath Marie (a small saucepan inside a large saucepan with boiling water)".
2) When everything has melted, leave to cool.
3) Crush the walnuts with the help of a nutcracker, then crush them into small pieces.
4) Whip the egg whites with a blender with a pinch of salt.

5) Grease and flour a baking tray.
6) Mix all the ingredients, putting the egg whites last, mixing gently with a spatula "cat's tongue".
7) Put everything in the pan and bake for 40 minutes at 180°C (356 F°).

8) Once the cake is cooked, let it cool. Sprinkle the powdered sugar on top with the help of a strainer.
9) Cut the cake into cubes.

Buon Appetito!!