Method

1. Preheat the oven to 160°C. Line a baking tray with baking paper.
2. Beat the butter and icing sugar until light and fluffy.
3. Mix in the vanilla and then the combined flour and cornflour. The dough should be soft but not sticky. Add a little more flour if needed.
4. Fill a piping bag with dough and pipe rings of dough onto the baking tray.
5. Bake for 15 minutes until lightly coloured and firm.
6. Cool on a wire rack and store in an airtight container once cold.