Method

1. Preheat the oven to 175°c
2. Line a cake pan with baking paper – do the bottom and sides or at least grease the sides (my pan was 23cm)
3. Slice the oranges nice and thin. Use a sharp knife. (if you’re not a ninja, try a mandolin but watch your fingers).
4. Combine sugar and water for the topping into a heatproof bowl and heat in a microwave for 30-40 seconds until sugar is dissolved. Pour half of it into the bottom of the cake pan, line with the blood oranges and then pour whatever is left.
5. Combine the sugar, zest and eggs into a bowl and use a hand mixer to mix until nice and pale (approx. 1 minute).
6. Turn the mixer to low and slowly stream the olive oil. Once the oil is added, add the vanilla and mix well.
7. Add the flour, almond flour, baking powder and salt in a bowl. Mix, and then add it to the wet mix and gently fold it together.
8. Throw the batter into the cake pan, and whack it in the oven for 45 minutes. A skewer should come out mostly clean when it is done.
9. Let it cool… yes be patient. Then flip it onto a plate, grab a fork, call a mate (or not) and jump in.