Preheat oven to Gas 2, 150°C, fan 130°C, 300°F and grease and line a 20cm/8 inch round cake tin.
Melt the butter, mix in sugar and eggs. Fold in the flour then the bananas. Make sure they are well combined.
Bake for 1 hour 30 minutes, serve hot or cold.
Make this in a 900g/2lb loaf tin if you prefer
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