How to cook
Heat the oven to 356°F (180 °C). Sift the flour with the baking powder.
Beat the eggs and sugar in a bowl until whitened. Add the vanilla.
Melt the chocolate and butter in a water bath. Let them cool. Carefully add the flour and mix everything together. Pour the mixture into an greased cake form.
Bake for about 25-30 min. - for a nice crust outside, yet moist inside.