Preheat the oven to 200°C.
Mix bread flour, baking powder, and salt in a bowl.
Add cold butter and rub with your hands until the dough has a crumbly texture.
Add milk and sugar, then bring together into a single dough.
Roll out the dough to a thickness of 2cm and cut into circles with a round cutter.
Place them on a baking pan lined with parchment paper.
Lightly brush the tops with milk.
Bake in the oven for 15 minutes until golden brown.