Step 1: Make the Biscuits : Preheat oven: to 450°F (230°C). Line a baking sheet with parchment paper. Mix dry ingredients: In a large bowl, whisk together flour, baking powder, baking soda, and salt. Cut in butter: Add cold butter cubes. Use a pastry cutter or your fingertips to mix until the mixture resembles coarse crumbs. Add buttermilk: Pour in buttermilk and stir until dough just comes together (do not overmix). Shape and cut: Turn dough onto a floured surface, gently pat it to about 1-inch thickness, and cut with a round biscuit cutter. Bake: Place biscuits on the baking sheet, brush tops with buttermilk, and bake for 12–15 minutes or until golden brown.

Step 2: Prepare the Sausage Gravy : Cook sausage: In a large skillet over medium heat, cook the sausage, breaking it apart with a spatula, until browned and cooked through. Add flour: Sprinkle flour evenly over the sausage and stir well to coat. Cook for 1–2 minutes to remove the raw flour taste. Add milk: Gradually pour in warm milk, stirring constantly. Continue to cook until the gravy thickens (about 5–7 minutes). Season: Add salt and plenty of black pepper. Taste and adjust seasoning.

Step 3: Combine and Serve : Split biscuits: Cut warm biscuits in half. Pour gravy: Spoon sausage gravy generously over each biscuit half. Serve immediately: Garnish with extra black pepper or fresh parsley, if desired.