In a deep bowl, combine the lukewarm milk, yeast, vanilla sugar, and caster sugar. Mix well and let the mixture rest for 5 minutes.

Add the vanilla cream and mix until smooth. Gradually add the beaten egg while continuing to mix. Then add the butter, flour, baking powder, and salt. Mix everything together until a dough forms and knead for 10-12 minutes. Cover and let rise in a warm place for 1 hour, until doubled in size.

Turn the dough out onto a floured work surface and roll it out to a thickness of 1.5 cm.

Using a pizza cutter or knife, cut the dough into pieces, spacing them slightly apart. Then let the dough rise for 30 minutes, or until it has doubled in size.

Heat a layer of sunflower oil in a frying pan over medium heat (175°C). Fry the vanilla donuts until golden brown on both sides. Drain the donuts on a paper towel.

If you like, you can also coat the vanilla donuts in granulated sugar before serving.