In a high speed blender combine all the ingredients and blend until smooth.
Divide the mix between the two prepared cake tins.
Tap the tins lightly on the kitchen surface to release any large bubbles. Pop the bubbles on the surface with a clean toothpick.
Place in the preheated oven for 35 minutes. The tops should be just starting to turn golden brown.
Remove from the oven and allow to cook for 20 minutes. Once cool, place in the fridge for two hours minimum before removing the cakes from their tins.
Divide the topping between the two cakes and serve. A grating of fresh orange zest is a nice touch too.