01 - Preheat oven to 400°F. Line a baking sheet with parchment paper.
02 - In a large bowl, whisk together flour, sugar, baking powder, salt, and orange zest until thoroughly blended.
03 - Add cold butter cubes to the flour mixture. Use a pastry blender or fingertips to work butter into flour until mixture resembles coarse crumbs with some pea-sized pieces remaining.
04 - In a separate bowl, whisk together heavy cream, egg, and vanilla extract until fully combined.
05 - Pour the wet mixture into the dry ingredients. Stir gently with a spatula or wooden spoon until just barely combined. Do not overmix.
06 - Gently fold cranberries into the dough, taking care not to overwork the mixture.
07 - Turn dough onto a lightly floured surface. Pat gently into a 1-inch thick disc approximately 7 inches in diameter.
08 - Cut disc into 8 equal wedges. Transfer wedges to prepared baking sheet, leaving at least 2 inches between each scone.
09 - Brush the tops of each scone lightly with additional heavy cream using a pastry brush.
10 - Bake for 16-18 minutes until tops are golden brown and a toothpick inserted in the center comes out clean. Remove from oven and transfer to wire rack to cool completely.
11 - In a small bowl, whisk powdered sugar, 2 tablespoons orange juice, and orange zest until smooth and pourable. Add additional juice if needed to reach desired consistency.
12 - Drizzle glaze generously over completely cooled scones. Allow glaze to set for 10-15 minutes before serving.