Pre-heat oven to 180°C (160°C fan-forced). Lightly grease with butterrn12 x ¹/³ cup capacity friand moulds.
Combine icing sugar, flours and poppy seeds in a large mixing bowl.
In a separate bowl, whisk the egg whites until frothy. Mix in the melted butter and orange rind. Add to dry ingredients and mix well.
Pour mixture between prepared moulds and bake for 18-20 minutes. Allow to cool for 5 minutes before removing to a cooling rack to cool completely.