01 - Preheat the oven to 425°F. Line a baking sheet with parchment paper or lightly grease it.
02 - In a large bowl, whisk together the flour, sugar, baking soda, salt, and caraway seeds.
03 - If using, stir in the raisins or currants until coated with flour.
04 - In a separate bowl, whisk together the buttermilk, egg, and melted butter.
05 - Make a well in the center of the dry ingredients and pour in the wet mixture.
06 - Mix gently with a wooden spoon or your hands until a shaggy dough forms; do not overmix.
07 - Turn the dough onto a lightly floured surface and knead just until it comes together (about 10–12 turns).
08 - Shape the dough into a round loaf about 7–8 inches in diameter.
09 - Transfer the loaf to the prepared baking sheet. Using a sharp knife, cut a deep X across the top.
10 - Bake for 35–40 minutes, or until the bread is golden brown and sounds hollow when tapped underneath.
11 - Cool on a wire rack for at least 30 minutes before slicing.