Preheat the oven to 425°F. Add parchment paper to a baking sheet.
In a large bowl, mix together flour, sugar, baking powder, and salt.
Add chilled butter into flour mixture and combine using a pastry cutter or fork. Work together until butter is incorporated, making pea-sized pieces of butter in the dough. (Be careful not to overmix).
Pour whole milk into dough bowl and stir gently with a wooden spoon until just combined. The dough should look slightly shaggy.
Transfer the dough to a well-floured surface. Using your floured hands or floured rolling pin, flatten dough until about 3/4 inch thick. Fold one side of dough into the center and then the other side. Flatten dough about 3/4 again and repeat folds.
Flatten the dough about 1 inch thick. Dust a 2 3/4 inch biscuit cutter with flour and cut straight down into the dough (don't twist). Place biscuits less than 1/2 inch apart on a prepared baking sheet or 10-inch cast iron skillet.
Gather dough scraps, gently press them together, and cut additional biscuits until you have 10-12 biscuits.
Bake at 425°F for 12 minutes, or until the tops are just beginning to turn golden brown. Remove from the oven and allow to cool in pan for at least 10 minutes before assembling to avoid melting whipped topping.