For the choux pastry with butter cream, prepare the choux pastry. For this, boil water, butter and salt in a pot. Add the flour little by little and stir to form a smooth lump.
Remove the pot from the heat, stir in the eggs and let the dough cool. Now, using a teaspoon, place small mounds on a baking tray. Bake them at 200°C for half an hour. Then let them cool down.
For the butter cream, mix the milk with the vanilla powder and the sugar and bring to the boil. Remove from the heat and melt the butter in the warm cream and mix well.
Cut the choux pastry doughnuts in half and fill with the cream. Sprinkle the choux pastry with butter cream with powdered sugar and serve.