175g butter, softened
175g sugar (half brown, half white)
175g self-raising flour
175g dark or milk chocolate broken into small pieces
2 very ripe bananas (about 250g total weight) - sliced/chopped
a little demerara sugar to sprinkle over the top of the cake.
Preheat oven to 170C / 150C fan / Gas 3½
Line the base and sides of a 20cm x 12cm loaf tin with greaseproof paper.
Gently fold in the rest of the ingredients and spoon into the loaf tin.
Bake 1 hr 10 mins, test with a skewer, if not cooked give another 15 mins and retest.