01 - Preheat oven to 400°F. Line a baking sheet with parchment paper.
02 - Whisk together flour, sugar, baking powder, baking soda, and salt in a large bowl.
03 - Add cold butter to flour mixture. Cut into flour using pastry cutter or fingers until mixture resembles coarse crumbs.
04 - Whisk cream, egg, and vanilla extract in a small bowl until combined.
05 - Pour wet ingredients into dry mixture. Stir gently until just combined. Do not overmix.
06 - Fold chocolate chips into dough until evenly distributed.
07 - Turn dough onto lightly floured surface. Gently pat into 8-inch circle about 1 inch thick.
08 - Cut circle into 8 wedges. Transfer to prepared baking sheet, spacing slightly apart.
09 - Brush tops of scones with a small amount of cream for golden browning.
10 - Bake for 16-18 minutes until golden brown. Cool on wire rack.
11 - Whisk powdered sugar, milk or cream, and vanilla extract until smooth.
12 - Drizzle glaze over cooled scones before serving.