Preheat the convection oven to 185° C and place the paper cups into the muffin mould.
In a bowl sift the bran flour with a pinch of salt and a pinch of vanilla powder and the baking powder, add the chopped nuts and the white chocolate chips and mix.
In another bowl beat the egg with the acacia honey and the sunflower oil. Add the liquid mixture to the dry mixture and mix it very well, lastly add the rice milk.
Pour the mixture into 6 paper cups until they are 2/3 full, lower the oven temperature to 180°C and cook for 20 minutes, or until they are well leavened and golden on the surface.
To check cooking, do the toothpick test: insert the toothpick in a muffin, if it comes out clean, the muffins are cooked.
Take them out of the oven and let them cool before eating.