Set 12 paper moulds into a 12-cup muffin mould or oil the cups.
In a bowl, mix all the flours with baking powder.
In another bowl with an electric mixer, whisk butter with brown sugar until the mixture blanch. Add eggs and mix until obtaining a homogenized paste. Add milk.
With a wooden spoon, add dry ingredients. Mix until obtaining a homogenized preparation. Avoid mixing too much.
Add blueberries with orange zests. Stir lightly few seconds.
Pour paste into cups. Oven-bake for 20 minutes until a toothpick set at the center gets out clean.
Remove from oven. Unmould and cool down on a grill.
Did you know that...
The best way to freeze blueberries is to dry them well after washing, spread them out on parchment paper for 1 hour in the freezer, then place them in an airtight container or bag, removing as much air as possible from the inside.