01 -
Preheat the oven to 400°F and line a baking sheet with parchment paper to prevent sticking.
02 -
In a large mixing bowl, whisk together flour, sugar, baking powder, salt, and lemon zest until evenly blended.
03 -
Add cold cubed butter to the dry mixture; use a pastry cutter or fingertips to work it in until the mixture forms coarse crumbs similar to small peas, ensuring flaky layers.
04 -
In a separate bowl, whisk heavy cream, egg, and vanilla extract until smooth with no streaks of yolk.
05 -
Pour the wet ingredients over the dry mixture and gently stir until just combined with a shaggy texture, avoiding overmixing.
06 -
Evenly sprinkle fresh or frozen blueberries over the dough and gently fold them in to keep berries whole and dough light.
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 the disc into 8 equal wedges and transfer to the prepared baking sheet spaced apart for even baking.
09 -
Lightly brush tops with extra heavy cream to achieve a golden crust. Bake for 16 to 18 minutes until golden and edges are set.
10 -
Cool scones on a wire rack for 10 minutes. For optional glaze, whisk powdered sugar with lemon juice and drizzle over warm scones.