Brownie

Melt dark chocolate and butter together over a double boiler.

In a bowl, add eggs and sugar and mix with a hand mixer.

Add the melted chocolate and butter, and mix well.

Sift cake flour and cocoa powder into the mixture and fold with a spatula.

Pour the batter into a pan lined with parchment paper and smooth the top.

Bake in a preheated oven at 170°C for 20 minutes.

Let it cool, then cut into desired sizes.