Preheat your oven to 425°F (220°C) and line a baking sheet with parchment paper.
In a large bowl, whisk together the flour, baking powder, and salt. Cut in cold butter until the mixture resembles coarse crumbs. Gradually stir in milk until just combined.
Drop generous mounds of dough onto the prepared baking sheet, ensuring space between each biscuit.
Bake for 12-15 minutes until golden brown.
In a skillet over medium heat, cook sausage until browned. Stir in flour, then gradually whisk in milk until thickened.
Serve biscuits hot with sausage gravy ladled on top.