I often make this as it uses up over ripe banana's which nobody wants and its delicious.
4 oz (100g) butter, softened
6 oz (175g caster sugar)
2 eggs, beaten
2 ripe bananas, mashed (if using the small Turkish bananas use 3)
8 oz (225g plain flour)
1 level teaspoon baking powder
1 level teaspoon...