01 - Preheat the oven to 400°F and line a baking sheet with parchment paper.
02 - Whisk together flour, sugar, baking powder, and salt in a large bowl.
03 - Cut the cold, cubed butter into the dry mixture using a pastry blender or fingertips until resembling coarse crumbs.
04 - In a separate bowl, whisk heavy cream, egg, and vanilla extract until well combined.
05 - Pour wet ingredients into dry ingredients and gently stir until just combined, avoiding overmixing.
06 - Gently fold in cranberries and orange zest if using.
07 - Transfer dough to a floured surface, pat into a 7-inch diameter circle about 1 inch thick.
08 - Cut dough into 8 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 or until golden brown.
11 - Allow scones to cool on a wire rack for 10 minutes before serving.