75g butter, softened
⅔ + ½ cup Tatua Cream Cheese, softened
2 cups caster sugar
3 large eggs + 1 egg white
2 tsp + 1tsp vanilla extract
1 cup fresh or frozen boysenberries
3 cups plain flour
1tsp baking powder
½ tsp baking soda
1 cup Tatua Sour Cream
1 cup icing sugar