METHOD

1. Preheat the oven to 180C.
2. Combine the flour, zest and Natvia in a bowl.
3. Add the butter, milk and egg. Whisk to combine. Pour into a greased and lined 20cm cake tin. Bake for 25-30 minutes, until a skewer inserted comes out clean.
4. Stand to cool for about 5 minutes before moving the cake from the tin to a wire rack to cool.
5. Combine the milk with the melted chocolate and then slather on the cake. Decorate with orange zest and slices of orange