Opera Slice Prep time: 35 minutes Cook time: 25 minutes Total time: 1 hour Serves: 6 small slices A yummy cake with layers of almond sponge, coffee buttercream and dark chocolate. Ingredients For the almond sponge: 60g ground almonds 30g extra virgin olive oil 1 tsp baking powder 1 tsp vanilla extract 60g agave nectar… 

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