01 - Preheat 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 until well blended.
03 - Add cold cubed butter to flour mixture. Cut in with pastry cutter or fingertips until mixture resembles coarse crumbs.
04 - Whisk together heavy cream, egg, and vanilla extract in a separate bowl until fully incorporated.
05 - Pour wet ingredients into dry mixture. Stir gently until just combined—do not overmix as this toughens scones.
06 - Fold chocolate chips into dough until evenly distributed.
07 - Turn dough onto lightly floured surface. Pat into a 7-inch circle, about 1 inch thick.
08 - Cut circle into 8 wedges. Arrange on prepared baking sheet, spacing slightly apart.
09 - Brush tops with extra heavy cream for golden color.
10 - Bake for 16 to 18 minutes until golden brown and cooked through.
11 - Let scones cool on wire rack for at least 10 minutes before serving.