Preheat the oven to 450°F. In a large bowl, whisk together 2 cups of flour, baking powder, salt, and baking soda.

Cut in the cold butter using a pastry cutter or your fingers until the mixture resembles coarse crumbs.

Stir in the buttermilk until just combined. Do not overmix.

Turn the dough onto a floured surface and gently knead it a few times until it comes together. Pat it into a 1-inch thick round.

Cut out biscuits using a biscuit cutter or a glass and place them on a baking sheet. Bake for 12-15 minutes or until golden brown.

While the biscuits are baking, cook the sausage in a large skillet over medium heat until browned and crumbled.

Stir in 1/4 cup of flour and cook for 1-2 minutes. Gradually whisk in the milk, stirring constantly until the gravy thickens. Season with salt and pepper to taste.

Serve the warm biscuits topped with the sausage gravy.