Cream together the soft butter and sugar until the mixture is light and fluffy.

Sift the flour and cornstarch together to ensure a uniform texture.

Gradually add the sifted flour and cornstarch mixture to the creamed butter and sugar.

Knead the dough until it forms a smooth ball.

Press the dough into a baking pan or shape into individual cookies.

Bake in a preheated oven until golden brown.

Let cool completely before cutting into slices or removing cookies from the pan.