This cake is very light and super easy. Forget step-by-step instructions, just put all ingredients into a food processor and whiz until the mixture is smooth. I usually serve it with dulce de leche to make it even more irresistible.

You need

• Food processor
• Non-stick cake tin

Ingredients

• 100g rice flour
• 3 eggs
• 400g red kidney beans can
• 100g sugar
• 75ml sunflower oil
• 2 tbsp cocoa unsweetened powder
• 11g baking (levure) powder
• 1 tsp vanilla extract
• pinch of salt
• dulce de leche to serve

Step by step

• Put all the ingredients into a food processor and whiz until you get a very smooth batter.
• Preheat the oven to 180C. Oil the cake tin, and spoon the batter into the tin speeding it evenly.
• Bake for approximately 30 min (check it with a wooden stick – it should come out clean).
• Serve with dulce de leche.

  Your shopping basket

• 1kg rice flour – £1.70
• 1L sunflower oil – £1.50
• 1kg sugar – £0.79
• 6 eggs – £1.30
• 400g can kidney beans – £0.60
• 125g cocoa powder – £1.95
• 11gx7 baking powder – £1.05
• 397g dulce de leche – £1.60
• Total basket £9.44 | Cost of ingredients (16 servings) £4.32 | Per serving £0.27