This beautiful recipe come from Kate here.
Having not had any cake for months, decided to do this recipe. I made half the quantity to try it out, using 1 1/2 clementines instead of an orange. This meant I didn't have to boil the orange beforehand. Instead they were chopped and chavelled up in my food processor before being finished off in my Nutribullet to make a puree. Yep, more washing up but no boiling!
Doing these alterations meant the mix was more liquid than originally intended, but it didn't matter in the end. I also changed them into muffin cases and baked them for 22 minutes at 190C: