Preheat oven to 450° F (230° C) degrees.
In a mixing bowl, whisk together flour, oats, baking powder, baking soda, sugar and salt.
Cut in butter, using a pastry blender or two knives, until butter pieces are pea-sized.
Slowly add buttermilk, stirring lightly, just until mixture comes together.
Generously sprinkle your counter or board with flour, turn out dough, and knead lightly for six turns only. That’s it – do not over work your dough.
Pat dough into a rectangle, 3/4” thick.
Cut into eight squares with a sharp knife.
Place on a parchment lined baking sheet, brush tops with buttermilk (if desired) and bake for 10 – 12 minutes, or until golden. Serve with sausage gravy.