In the interest of scientific accuracy, for those who wish to try the experiment themselves at home, I shall note down the proceedure...
Take 3oz (sorry modern science teachers*, I still don't believe in evolution, so grammes mean nothing to me either) of butter, blend with 6oz of caster sugar, until light and fluffy. Add 2 beaten medium sized eggs with 10 oz of mashed bananas and 8oz of sifted plain flour, 3 level teaspoons of baking powder, and a pinch of salt.
For our recipe, we added some sunflower seeds, and some flaked almonds, and sprinkled extra ones on top after putting the mixture into a 2lb loaf tin.
(2 oz of walnuts can be added, if desired).
Cook for about an hour at 350 deg. F, roughly! (We actually used Celsius, but my recipe says F. and I don't know how to convert it, so we played around and it came out ok - see how scientific we are) (My son does know how to convert it, but he thought it would take too much brain effort).
* (Modern science teachers will be relieved to know that my son does think in grammes, and thought my funny old fashioned z in oz was a g, and was about to weigh out 30 grammes, instead o f 3 ounces - fortunately I realised in time what he was up to - but would it have mattered? is there a big difference between 30 grammes and 3 ounces?? I'm musing to myself here...)