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. Use a pastry cutter or your fingertips to work the butter into the flour until the mixture resembles coarse crumbs with some pea-sized pieces remaining.
04 - In a separate bowl, whisk together cream, egg, and vanilla extract until fully blended.
05 - Pour the wet mixture over the flour mixture. Stir gently with a spatula or wooden spoon until just combined. The dough should be shaggy and slightly sticky.
06 - Gently fold in raspberries and white chocolate chips, taking care not to crush the berries. Mix just until evenly distributed.
07 - Turn the dough onto a lightly floured surface. Gently pat into a 1-inch thick circle. Cut into 8 equal wedges using a sharp knife or bench scraper. Transfer wedges to the prepared baking sheet, spacing them 2 inches apart.
08 - Brush the tops of scones with a thin layer of heavy cream. Bake for 16-18 minutes until golden brown on top and a toothpick inserted in the center comes out clean.
09 - Let scones cool on the baking sheet for 5 minutes, then transfer to a wire rack to cool completely or until ready to glaze.
10 - In a small bowl, whisk together powdered sugar, 1 tablespoon of milk or cream, and vanilla extract. Add more liquid if needed to reach a pourable consistency.
11 - Drizzle the glaze over warm or cooled scones. Allow glaze to set for a few minutes before serving.