Preheat oven at 150°C for 10 minutes.

Mix together plain flour, corn flour and sift it. Keep aside.

Beat butter, sugar and vanilla essence in a bowl with electric mixer until light and fluffy.

Stir in combined sifted flours in two batches. Then make small balls and place about 3 cm apart on baking paper lined oven trays.

Bake about 15 minutes or until lightly golden brown.

Stand cookies on trays for 5 minutes before lifting onto wire rack to cool.

Store in airtight container.

NOTE - If the dough is too soft, refrigerate it about 5 minutes.