3 bananas, very ripe (black peel)
150 g of sunflower oil
200 g of brown sugar
1 teaspoon of vanilla essence
2 large eggs
75 g of natural yoghurt
210 g of GALLO wholemeal flour
1 teaspoon of baking soda
1 teaspoon of baking powder
A dash of salt
60 g of black chocolate chips
100 g of walnuts, chopped