Preheat the oven to 180°C.
Cream the butter and sugar together until smooth.
Add the egg and mix well.
Sift in the flour, baking powder, and salt, then mix together.
Add chocolate chips and mix evenly into the dough.
Scoop the dough with a spoon and place it on a baking sheet.
Bake in the oven at 180°C for 12–15 minutes.