Put all the ingredients in the bowl, mix: 30 sec. speed 4, set aside and let the batter rest for 20 minutes.
Heat a griddle or pan, brush the bottom with butter, pour in a ladle of mixture and let it cook.
When the surface has bubbles, it will be time to turn them over, cook them also on the other side, a few minutes will suffice.
Serve stacked one on the other, 3 or 4 each (depending on the size) and sprinkle them with maple syrup... Bon Appetit!
It is possible to freeze them once cooked and allowed to cool completely. I put a sheet of parchment paper between one pancake and another and then closed them in a frozen bag.
To defrost them, just move them to the fridge and then let them spend a few minutes in a pan.
I used this baking powder.