Preheat the oven to 180°C (356°F).
Cream the butter and sugar together in a bowl.
Add the egg and mix well.
Sift in cake flour, baking powder, and salt, then combine.
Fold in the chocolate chips to complete the dough.
Drop spoonfuls of the dough onto the baking tray.
Bake in the oven for 10 to 12 minutes.
Transfer the cookies to a wire rack to cool.