Heat the oven to 425°F and mix the 2 cups flour with the baking powder.
Cut the cold butter into the flour, fold in the buttermilk, pat the dough 1 inch thick, cut 6 biscuits, and bake for 14 to 16 minutes until golden.
Brown the sausage in a skillet for 8 to 10 minutes, breaking it into small pieces until it reaches 160°F.
Sprinkle the 1/4 cup flour over the sausage, stir for 1 minute, then add the milk gradually while scraping the pan.
Simmer for 5 to 7 minutes until the gravy coats a spoon, season with pepper and salt, and ladle it over split biscuits.