01 -
Preheat oven to 400°F and line a baking sheet with parchment paper.
02 -
In a large bowl, whisk together flour, sugar, baking powder, salt, and lemon zest until evenly blended.
03 -
Add cold cubed butter to the dry mixture and use a pastry cutter or fingertips to work it in until coarse crumbs resembling small peas form.
04 -
In a separate bowl, whisk heavy cream, egg, and vanilla extract until smooth and uniform.
05 -
Pour wet ingredients into dry and gently stir just until combined to create a shaggy dough; avoid overmixing.
06 -
Fold in blueberries gently to keep them whole and maintain light dough texture.
07 -
Turn dough onto a lightly floured surface and pat into a 7-inch diameter disc about 1 inch thick, working quickly to keep butter cold.
08 -
Slice disc into 8 even wedges and place on prepared baking sheet, spacing evenly.
09 -
Lightly brush tops with heavy cream. Bake 16 to 18 minutes until tops are golden and edges are set.
10 -
Cool scones on a wire rack for 10 minutes. Whisk powdered sugar with lemon juice and drizzle over warm scones.