Preheat oven to gas 4 /180C / 350°F and grease, line and flour 2 x 8 inch round tins
Puree the first set of wet ingredients together in a blender
Mix all dry ingredients together in a large bowl, then add in the avocado mix and combine until smooth. Gluten free flour will require extra water added, around 30 - 60 mls (up to 1/4 cup)
Mix the other set of wet ingredients together and stir quickly into the batter, only stirring 7 or 8 times
Split the batter between the two tins, put straight into the oven and bake for 35 - 45 minutes until a toothpick inserted in the centre comes out clean
Let cool in the tins for 15 minutes before turning out onto a wire rack to cool completely
For the frosting add the lemon juice to the avocado and beat until a bit paler, then gradually add in icing sugar and mix the vanilla in at the end
The frosting will keep in the fridge until needed, it won't go brown. Use it to sandwich the cakes together then to decorate the top
You don't have to use this particular frosting. I use a variety such as caramel, chocolate and vanilla. The green doesn't appeal to everyone, I use it as the wow factor
This is the marble cake version. Just leave out the cocoa powder in the main batter. When you bake the two tins, divide half the plain batter between them and add half of the cocoa powder to the remaining batter mix. Dollop some of the cocoa batter on top of the plain batter and swirl it through with a knife - not too much! Bake as normal
