Preheat oven to 18oC (350 F) Line a baking sheet with baking parchment.

Cream butter and sugar until fluffy

Add the vanilla extract. Beat the egg and add it a little bit at a time mixing well after each addition

Stir in the milk and then sift in the flour and baking powder. Fold it in and finally add the chocolate chips

Place 16 spoonfuls of the mixture on the baking tray and press down with a fork

Bake for 15 minutes until golden.