Preheat oven to 180c.
Grease and line 25cm springform pan.
Cream butter and sugar, add vanilla extract, egg & EOSS yoghurt.
Mix well.
Add flour & baking powder mix.
Place mixture into pan.
Flatten mixture, sprinkle frozen berries over the top.
Bake for 35 to 45 minutes.
Allow to cool in pan.
Dust with icing sugar.
Serve with a large dollop of EOSS Vanilla Bean yoghurt.