Mix flour and baking powder. Mix eggs, milk, flour and vanillin sugar to a smooth dough. Leave to swell for about 30 minutes. Sort blueberries, wash and drain.
Heat some fat in a pan and pour in about 1/8 of the dough. Sprinkle 1/8 of the blueberries on top. Fry the pancakes until golden brown while turning. Slide onto a large plate, dust with icing sugar and keep warm.
From the remaining dough, bake 7 more pancakes in the same way. Place all of them on the plate one on top of the other. Dust with icing sugar and serve with maple syrup.