Add flour, baking powder, and salt to a large mixing bowl.
Grate the butter into the dry ingredients. Use a pastry cutter, your hands, or a fork to incorporate until the mixture becomes crumbly.
Add milk/buttermilk.
Mix just until combined. Do not overmix.
Turn dough onto floured surface. Turn a few times. Roll out until 1/4-1/2 inch thick.
Cut biscuits out with biscuit cutter or mason jar lid. This recipe makes 7-8 biscuits depending on how thick you roll them out.
Place on prepared baking sheet. Brush with olive oil or melted butter.
Bake in a 400 DEGREE F oven for 12-15 minutes.
Check after 10-12 minutes. If the biscuits feel firm, they are done.
***If tops are not brown enough, put under broiler for just a few minutes***