Preheat the oven to 450°F (230°C).

In a mixing bowl, whisk together the flour, baking powder, and salt.

Add the cold, cubed butter to the dry ingredients and work it into the flour until it resembles coarse crumbs.

Pour in the milk and stir gently until just combined.

Transfer the dough onto a lightly floured surface.

Roll the dough into a rectangle about 1/2 inch thick and fold it into thirds.

Cut the dough into squares or circles and place them on a baking sheet lined with parchment paper.

Bake in the preheated oven for 12-15 minutes or until golden brown.