3 ripe bananas
3/4 of sugar (granulated or caster)
1/2 of light brown sugar
1/2 of vegetable oil
2 eggs (room temperature)
2 cups of self raising flour (sifted)
1/2 cup plain yoghurt
2 teaspoons of vanilla
1 orange (grate the zest and squeeze in a little juice)
1 teaspoon of baking powder
1/2 teaspoon of salt
1 1/2 teaspoons of baking spices
Optional: 1/2 cup of walnuts or raisins

In a mixer: 

• Mix bananas and sugars on a low speed
  
• While on low speed, add oil, egg, yoghurt, vanilla, orange zest and squeeze in a little juice from the orange.
  
• Mix until smooth
  
• Sift flour, baking soda, salt and spices in a seperate bowl 
• Add dry ingredients to mixture and then on a medium speed mix until combined.
• Stir in nuts or raisins
• Bake for 45-50 minutes in an preheated oven at 350F 
  
• Test cake with by Inserting a toothpick to ensure that it is cooked in the middle...
• Cool for 15 minutes in tin, then turn onto a cooling rack.