Preheat your oven to 425°F and lightly grease a baking sheet with cooking spray.
In a medium bowl, mix together the flour, salt, and baking powder until all ingredients are evenly distributed.
Cut the butter into small cubes and add to the dry ingredients. Using your fingers, incorporate the butter into the mix until it resembles a crumbly texture.
Slowly start adding in the milk while stirring or using your hands to knead together until it forms a soft dough. You may need to add more milk depending on how dry the dough is.
Dust a clean surface with flour and knead the dough for 1-2 minutes until it's nice and soft.
Roll out the dough to an even thickness of ¼ inch and use a biscuit cutter or glass to cut out circles in the size desired. Place the biscuits on the prepared baking sheet.
Bake for 12-15 minutes until golden brown and let cool before serving.