01 - Preheat oven to 400°F. Line a baking sheet with parchment paper.
02 - In a large bowl, whisk together flour, sugar, baking powder, baking soda, and salt until well combined.
03 - Add cubed cold butter to the flour mixture. Cut in using a pastry cutter or fingertips 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 smooth.
05 - Pour wet mixture over flour mixture. Stir gently with a spatula until just combined, being careful not to overmix.
06 - Gently fold in fresh raspberries and white chocolate chips, taking care not to crush the berries.
07 - Turn dough onto a lightly floured surface. Pat into a 1-inch thick circle. Cut into 8 equal wedges and transfer to the prepared baking sheet, leaving space between pieces.
08 - Brush tops of scones with a thin layer of extra heavy cream for golden browning.
09 - Bake for 16-18 minutes until golden brown and set in the center. Remove from oven and let cool on baking sheet for 5 minutes before transferring to a wire rack.
10 - While scones cool, whisk together powdered sugar, milk, and vanilla extract until smooth and drizzleable. Add more liquid if needed to achieve desired consistency.
11 - Drizzle glaze over warm or cooled scones. Allow glaze to set for 5 minutes before serving. Best served fresh the same day.