Preheat the oven to 180°C (356°F).
Mix flour, baking powder, sugar, and salt in a bowl.
Add cold butter and crumble it with your hands.
Combine milk and egg, add to the mixture, and knead into a dough.
Flatten the dough and cut it into rounds or triangles.
Place on a baking tray and bake for 15-20 minutes.