100驳/3陆辞锄 overripe banana, mashed
75g/2戮oz chewy dried banana slices, broken into pieces
100驳/3陆辞锄 carrot, peeled and coarsely grated
100驳/3陆辞锄 courgettes, coarsely grated
1 tsp baking powder
175g/6oz caster sugar
225g/8oz icing sugar
225g/8oz self-raising flour
225ml/8fl oz sunflower oil, plus extra for greasing
1 tsp vanilla extract
100驳/3陆辞锄 butter, softened
100驳/3陆辞锄 full-fat cream cheese
4 large free-range eggs