[Ingredients]
125g softened butter
40g sifted icing sugar
1tsp vanilla essence
125g potato starch
80g cake flour
[Steps]
In a mixing bowl, beat butter and icing sugar till light and fluffy. Add in vanilla essence and mix well.
Sift in potato starch and cake flour. With a spatula, mix to form a soft dough. Note: if the mixture appears too soft and wet to shape, leave the dough to chill in the fridge for about 10-15mins .
Roll dough into small balls (about 2cm in diameter), arrange on lined baking pan and press lightly with a fork (dip the fork in water after each press to prevent cookie dough from sticking to the fork).
Bake in preheated oven at 170 deg C for 15 mins, upper rack (need not bake till cookies turn brown).