01 - Preheat oven to 400°F. Line baking sheet with parchment paper.
02 - Whisk flour, sugar, baking soda, baking powder, and salt in large bowl. Stir in raisins if using.
03 - Whisk buttermilk, egg, and melted butter in separate bowl until fully combined.
04 - Pour wet mixture into dry ingredients. Fold gently with spatula until just combined. Avoid overmixing.
05 - Turn dough onto floured surface. Pat into 1-inch-thick round. Cut scones using floured 2.5-inch cutter.
06 - Place cut scones on prepared sheet. Gather scraps and repeat cutting process.
07 - Bake 16-18 minutes until golden and toothpick inserted in center comes out clean.
08 - Cool briefly. Serve warm with softened butter.