Combine all the dry ingredients by whisking together and set aside.
Pour in all the wet ingredients into a separate bowl and stir to combine. Add in the shredded carrots and slowly mix in the ground oatmeal.
Now, add the nuts, citrus zest, raisins and candied mixed peel (if using).
Stir to combine, then leave the batter to rest for 20 minutes - it's very important that the oatmeal is left to rest, so it can absorb all the moisture.
Stir again before transferring into an oven dish to bake.
Bake at 180°C / Gas Mark for 35-40 minutes. Insert a toothpick in the centre, if it comes out clean, then it's ready.