Mix the semolina, desiccated coconut, butter, sugar, natural yogurt, vanilla sugar and baking powder. Pour the dough into a (small) greased springform pan. Bake in the convection oven at 180 ° C for 30 minutes. Take out of the oven and let cool in the tin until it is lukewarm.
In the meantime, mix 1 small cup of sugar and 2 small cups of water, bring to the boil and simmer for 10 minutes. Pour the liquid over the cake. When everything is absorbed, remove the cake from the mold.