This is a recipe I found on BBC Good Food it was actually a vegan recipe, but I chose it more for the fact I had an avocado I wanted to use up and just switched the recipe to what I had in the house, which was not dairy free/vegan ingredients. For the buttercream icing I just used my own recipe, however if you want to make the avocado filling/topping I’ve added that too. The cake was lovely and moist and lasted about 5 days (it probably could have gone longer if we didn’t all scoff it).

Ingredients

For the cake

1 large, ripe avocado (about 150g)
300g light muscovado sugar
350g plain flour
50g good quality cocoa powder
1 tsp bicarbonate of soda
2 tsp baking powder
400ml milk (soya milk, if you want to make this vegan/dairy free)
150ml vegetable oil
2 tsp vanilla extract

For the vegan frosting

85g ripe avocado flesh, mashed
85g dairy-free sunflower spread
200g dairy-free chocolate, 70% cocoa, broken into chunks
25g cocoa powder
125ml unsweetened soya milk
200g icing sugar, sifted
1 tsp vanilla extract
gluten-free and vegan sprinkles, to decorate

For the buttercream frosting

350g icing sugar
50g butter
1/2tsp vanilla extract
splash of milk
25g cocoa powder
200g dark chocolate (melted)

Method

Heat oven to 160C/140C fan/gas 3. Grease two 20cm sandwich tins with a little dairy-free sunflower spread, then line the bases with baking parchment.
Put 1 large avocado and 300g light muscovado sugar in a food processor and whizz until smooth.
Add 350g gluten-free plain flour, 50g cocoa powder, 1 tsp bicarbonate of soda, 2 tsp gluten-free baking powder, 400ml unsweetened soya milk, 150ml vegetable oil and 2 tsp vanilla extract to the bowl with ½ tsp fine salt and process again to a velvety, liquid batter.
Divide between the tins and bake for 25 mins or until fully risen and a skewer inserted into the middle of the cakes comes out clean.
Cool in the tins for 5 mins, then turn the cakes onto a rack to cool completely.

Vegan frosting

While you wait, start preparing the frosting. Beat together 85g ripe avocado flesh and 85g dairy-free sunflower spread with electric beaters until creamy and smooth. Pass through a sieve and set aside.
Melt 200g dairy-free chocolate, either over a bowl of water or in the microwave, then let it cool for a few mins.
Sift 25g cocoa powder into a large bowl. Bring 125ml unsweetened soya milk to a simmer, then gradually beat into the cocoa until smooth. Cool for a few mins.
Tip in the avocado mix, 200g sifted icing sugar, melted chocolate and 1 tsp vanilla, and keep mixing to make a shiny, thick frosting. Use this to sandwich and top the cake.
Cover with sprinkles or your own decoration, then leave to set for 10 mins before slicing. Can be made 2 days ahead.

Buttercream frosting

Leave your butter out at room temperature to soften a little
Melt the dark chocolate
Sieve the icing sugar into a bowl or in your mixer
Add the softened butter, cocoa powder, melted chocolate and mix everything together