6: And fold in gently. The best way to do this is to tip the bowl at angle, and lift and turn the mixture with a soft spatula.
7: Incorporate the softened butter in the same way. The cake batter is ready. Preheat the oven to 360°F (180°C).
8: Spread the mixture evenly in a round non-stick tin or mould.
9: Sprinkle the top with 1 tablespoon granulated sugar.
10: Bake for about 20 minutes. Be careful not to overcook this cake, or it will be too dry.
Remarks
You will notice that the cake hardly browns naturally. If you prefer your cake with a little more colour, glaze the top with beaten egg-yolk before sprinkling with the granulated sugar.