Add the apple and courgette to a bowl or food processor. Add the flour, baking powder, cocoa, eggs, honey, olive oil, vanilla extract and salt. Either blitz, or mix together with a spoon.
200 g courgette, 1 dessert apple, 125 g wholemeal flour, 1.25 tsp baking powder, 25 g cocoa, 2 tbsp olive oil, 2 eggs, 3 tbsp honey or maple syrup, 1 tsp vanilla extract, pinch salt