Epiphany... January 6...
Today is the party. at least for Christians. You can read what exactly is being celebrated here. https://weetwatjeviert.nl/alle-feestdagen/driekoningen/
And of course, partying also includes cake. This time in the shape of a Galette des rois or Epiphany cake. You can read how to make such a traditional cake here. https://www.patesserie.com/recepten/taart/traditionele-driekoningentaart-galette-des-rois/
But I would @Mevrouw Stop. of course not be if I didn't give it my own twist and put a more personal cake on the table.