Preheat oven to 425f and prepare baking sheet with parchment paper or rub butter all over.

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

Add in the cold, cubed butter. Use a pastry cutter or your hands to cut the butter into the flour mixture until it looks like coarse crumbs.

Pour in the cold milk and stir just until the dough comes together. Be careful not to over mix!

On a well floured surface, work the dough together gently. If the dough is too sticky, add flour until it is easier to work with. Then, fold the dough in half and rotate the dough and fold over again. Gently pat the dough into a 1-inch-thick rectangle.

Cut closely into biscuits with a round cutter 5-6 times then place on prepared baking sheet. Gently reshape the dough to get the last biscuit or two.

Bake at 425°F for 12–15 minutes, or until the tops are golden brown.

Brush melted butter if desired and serve warm.