Chocolate Banana Cake

I saw Nigel Slater cooking this on his 'Simple Suppers' programme this week and knew I had to bake it - although even I would draw the line at having cake for my supper!  A look at my other 'Nigel' cakes on this blog will show how often he uses a 'pound cake' mix - i.e. equal quantities of flour, sugar and butter.  If the butter is lovely and soft, it is a breeze to make - just bung it all in the food mixer with some eggs and half a teaspoon of cinnamon and give it a good mix.  The quantities he used were 175g each of the SR flour/caster or light muscovado sugar/unsalted butter base, with 2 eggs.  When well beaten and fluffy, fold through 3 medium or 2 large ripe bananas, chopped, and 125g of dark chocolate, chopped fairly chunkily.  Turn into a greased and lined 2lb loaf tin and bake at 160C fan for 45 minutes or so until the centre is cooked.  Nigel added chopped toasted hazelnuts to his mix, but I didn't have any.  I'm sure this would be a wonderful addition.  This cake should keep well for our lunchboxes.....provided I can stop snaffling slices of it.