Place the oats in a large bowl and pour over the coconut milk. Cover the bowl and pop it in the fridge for 8-12 hours.
Pre-heat the oven to 175C(375F) fan-forced and line a 12-hole muffin tin with cases or grease a non-stick muffin tin.
Take the soaked oats out of the fridge and mix in the egg, maple syrup, oil, vanilla, cinnamon, baking powder and salt then fold through the blueberries.
Bake for 25-30 minutes or until golden.
Leave them in the tin for 10 minutes and then transfer to a wire rack to cool.