Preheat your oven to 425°F (220°C). This high temperature is crucial for achieving that perfect biscuit rise.
In a skillet over medium heat, cook the sausage until browned and fully cooked. Drain any excess fat and set aside to cool.
In a large mixing bowl, whisk together the all-purpose flour, baking powder, and salt until well combined.
Using a pastry cutter or two forks, cut the cold butter into the flour mixture until it resembles coarse crumbs. This step is essential for creating those flaky layers.
Make a well in the center of the dry ingredients and pour in the buttermilk. Stir gently until just combined; be careful not to overmix.
Once the dough has formed, gently fold in the cooked sausage and shredded cheese. This will distribute the flavors evenly throughout the biscuits.
Turn the dough out onto a lightly floured surface. Pat it into a rectangle about 1 inch thick. Using a floured biscuit cutter, cut out biscuits and place them on the prepared baking sheet.
Bake in the preheated oven for 12-15 minutes, or until golden brown. Keep an eye on them, as oven times can vary!
Once baked, remove the biscuits from the oven and let them cool slightly on a wire rack. If you’re making them ahead, allow them to cool completely before storing.