01 -
Preheat the oven to 400°F and line a baking sheet with parchment paper.
02 -
Whisk together flour, sugar, baking powder, salt, and lemon zest in a large bowl until evenly mixed.
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 with no visible streaks of yolk.
05 -
Pour wet ingredients over dry and gently stir until just combined, avoiding overmixing to keep the dough shaggy.
06 -
Gently fold in fresh or frozen blueberries, maintaining their integrity and keeping the dough light.
07 -
Turn dough onto a lightly floured surface and pat into a 7-inch diameter disc about 1 inch thick, working swiftly to keep butter cold.
08 -
Slice the disc into 8 equal wedges and place them spaced apart on the prepared baking sheet.
09 -
Brush the tops lightly with cream and bake for 16 to 18 minutes until tops are golden and edges are set.
10 -
Allow scones to cool on a wire rack for 10 minutes. Whisk powdered sugar with lemon juice and drizzle over slightly warm scones.