01 - Preheat the oven to 400°F. Line a baking sheet with parchment paper.
02 - In a large bowl, whisk together the all-purpose flour, granulated sugar, baking powder, and salt until well combined.
03 - Add the cold, cubed unsalted butter to the dry ingredients. Use a pastry cutter or your fingertips to work the butter into the flour mixture until it resembles coarse crumbs.
04 - In a separate small bowl, whisk together the heavy cream, large egg, and vanilla extract.
05 - Pour the wet mixture into the flour and butter mixture. Stir gently with a spoon or spatula until just combined, being careful not to overmix.
06 - Gently fold in the chocolate chips. Continue to avoid overmixing, as this can result in tough scones.
07 - Transfer the dough to a lightly floured surface. Gently pat the dough into a round disc, approximately 1 inch thick.
08 - Using a knife or bench scraper, cut the dough disc into 8 equal wedges. Carefully transfer these wedges to the prepared baking sheet, ensuring they are spaced evenly apart.
09 - Lightly brush the tops of the scones with a small amount of extra heavy cream; this will help them achieve a golden brown crust during baking.
10 - Bake for 16 to 18 minutes, or until the scones are puffed and golden brown on top.
11 - Allow the chocolate chip scones to cool slightly on the baking sheet before serving warm.