Make a dough using flour, sugar, salt, yeast, milk, egg, and butter.
Let the dough rise for the first fermentation.
Divide the dough, shape them into balls, and let them rise for the second fermentation.
Prepare the blueberries and choux cream.
Add choux cream and blueberries to the fermented dough and shape them.
Bake in a 180°C oven for 15 minutes.
After cooling, top with extra choux cream and blueberries.