Preheat the Oven: Preheat your oven to 425°F (220°C) and line a baking sheet with parchment paper or a silicone mat.
Mix the Dry Ingredients: In a large mixing bowl, combine the flour, baking powder, and salt. Stir until well mixed.
Cut in the Butter: Add the cold, cubed butter to the flour mixture. Using a pastry cutter or your hands, cut the butter into the flour until it resembles coarse crumbs.
Add Cheese and Bacon: Stir in the shredded cheddar cheese and cooked bacon until evenly distributed.
Mix in the Buttermilk: Gradually pour in the buttermilk, stirring until a soft dough forms.
Shape the Biscuits: Turn the dough onto a floured surface and gently knead it a few times, about 5-6 times. Pat it into a 1-inch thick rectangle, and cut out biscuits using a round cutter or a glass.
Bake: Place the biscuits on the prepared baking sheet and bake for 15-20 minutes or until golden brown on top.
Serve Warm: Enjoy the biscuits warm, straight from the oven, perhaps with a spread of butter or your favorite jam.