01 - Preheat the oven to 400°F. Line a baking sheet with parchment paper.
02 - In a large bowl, whisk together the flour, sugar, baking powder, and salt.
03 - Add cold, cubed butter to the dry mixture and cut in using a pastry blender or fingertips until the mixture resembles coarse crumbs.
04 - In a separate bowl, whisk together the heavy cream, egg, and vanilla extract.
05 - Pour the wet ingredients into the dry mixture and stir gently until just combined, avoiding overmixing.
06 - Gently fold in the cranberries and orange zest, if using.
07 - Transfer the dough to a floured surface and pat into a 7-inch diameter circle approximately 1 inch thick.
08 - Cut the dough into 8 equal wedges and place them spaced apart on the prepared baking sheet.
09 - Brush the tops with cream and sprinkle with coarse sugar if desired.
10 - Bake for 16 to 18 minutes until golden brown.
11 - Cool the scones on a wire rack for 10 minutes before serving.