Preheat the oven to 180°C.
Cream the butter and sugar together in a bowl.
Add the egg and mix well.
Add the flour, baking powder, and salt, and mix together.
Add chocolate chips to the dough and mix evenly.
Scoop small portions of the dough and place them on a baking pan.
Bake in the oven at 180°C for 12-15 minutes.