Step 1: Make the Biscuits

1. Preheat oven to 425°F (218°C). Line a baking sheet with parchment paper.
2. In a large bowl, whisk together flour, baking powder, and salt.
3. Cut in the cold butter using a pastry cutter or your hands until the mixture resembles coarse crumbs.
4. Stir in the buttermilk until just combined. Do not overmix.
5. Roll out the dough on a floured surface to about 1-inch thickness. Cut into rounds using a biscuit cutter.
6. Place biscuits on the prepared baking sheet and bake for 12-15 minutes, until golden brown.

Step 2: Brown the Sausage

1. While biscuits bake, heat a large skillet over medium heat.
2. Add the breakfast sausage and cook until browned, breaking it up with a spoon.

Step 3: Make the Gravy

1. Sprinkle the flour over the cooked sausage and stir to coat.
2. Slowly pour in the milk, stirring constantly to avoid lumps.
3. Cook for 5-7 minutes, stirring frequently, until the gravy thickens.
4. Season with salt and black pepper to taste.

Step 4: Serve and Enjoy

1. Split the biscuits and spoon the hot sausage gravy over the top.
2. Serve immediately and enjoy!