You will need a 7.5 inch or 18 cm cake tin, greased and lined
Method
Melt the couverture powder, in a bowl over a pan of simmering water.
Cream together the butter and the sugar. Beat in the melted chocolate. Beat in the eggs one at a time with a tablespoon of the flour. Fold in the rest of the flour.
Spread the mixture into the tin.
Bake at 180°C (160°C for fan ovens) for 25 to 30 minutes, until slightly golden on top and springy when touched. Leave in the tin for 5 minutes before turning out to cool.
