Dark chocolate with the butter melt in a water bath.
Vzbey eggs with sugar, add flour with baking powder, salt, chocolate-oil mixture. Beat with a blender. Mix the dough with nuts and white chocolate chips.
Form grease with oil, making the parchment, pour the dough, bake at a temperature of
180 °C for 25-30 minutes.
Ready cake cut into small pieces, sprinkle a little powdered sugar.