Mix the soft butter with the brown and white sugar until creamy. Add the eggs one at a time and beat well. Gradually add the vanilla sugar, applesauce and vanilla yoghurt.
Preheat the oven to 180 ° C and grease and flour a bundt cake pan.
In a bowl, mix the flour, ground almonds, baking powder, baking soda, salt and cinnamon together. Add the flour mixture to the butter, sugar and egg mix and stir to form a smooth dough.
Pour the dough into the prepared Gugelhupf pan and bake in the oven for about 60 minutes.
Let the cake cool in the tin for at least 60 minutes and then turn it out. Dust with powdered sugar.