Preheat your oven to 200C
Beat softened cream cheese, caster sugar, and parmesan cheese until combined.
Stir in vanilla extract.
Crack in egg, one at a time.
Drizzle in yogurt and melted butter.
Then, fold in plain flour.
Transfer into a 6-inch removable round cake pan that has been greased and lined with parchment paper.
Bake it in the oven for an hour, then broil it for a few minutes until the top is evenly browned.
Let it cool until room temperature then chill it in the fridge overnight before unwrapping.