- Sieve the flour, cocoa powder, baking powder and salt and add the sugar, olive oil and Borges Natura Rice & Walnut Drink.
- Beat until you get a smooth mixture.
- Line a baking tray with baking paper and pour the mixture onto it.
- Sprinkle the chopped walnuts on top and bake at 350º F for 30 minutes. Leave to cool before removing from the tray.