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 cold butter cubes to the flour mixture. Cut in with a pastry cutter or fingertips until mixture resembles coarse crumbs with pea-sized butter pieces remaining.
04 - In a separate bowl, whisk together heavy cream, egg, and vanilla extract until fully blended.
05 - Pour wet ingredients into dry mixture. Stir gently with a spatula just until dough begins to come together. Do not overmix.
06 - Gently fold in raspberries and white chocolate chips until evenly distributed. Some raspberry breakage is expected.
07 - Turn dough onto lightly floured surface. Gently pat into an 8-inch circle about 1 inch thick. Cut into 8 wedges and transfer to prepared baking sheet, leaving space between each.
08 - Brush tops with additional heavy cream. Bake for 16–18 minutes until golden brown and set in the center. Cool on wire rack.
09 - Whisk powdered sugar, milk or cream, and vanilla extract until smooth and drizzling consistency. Adjust liquid as needed.
10 - Drizzle glaze over cooled scones. Allow glaze to set briefly before serving. Best enjoyed warm or at room temperature on the same day.