Diet Chocolate Brownie
Preheat the oven to 180°C.
Melt dark chocolate and butter over a double boiler.
Add sugar and mix well.
Add eggs one at a time, mixing each in.
Sift cake flour and cocoa powder, add to the mixture, and combine.
Pour the batter into a baking pan.
Bake in the oven for 25 minutes.
Let it cool, then cut into appropriate sizes.