Preheat the oven to 180°C (356°F).
Cream together the butter and sugar until smooth.
Add the egg and mix well.
Add cake flour, baking powder, and salt, then mix.
Stir chocolate chips into the dough.
Scoop the dough onto the baking pan, one spoonful at a time.
Bake in the oven for 12-15 minutes.
Cool on a wire rack.