01 - Preheat oven to 400°F. Line a baking sheet with parchment paper.
02 - In a large bowl, whisk together flour, sugar, baking powder, and salt until well blended.
03 - Add cold butter cubes and use a pastry cutter or your fingers to rub it into the flour mixture until it resembles coarse crumbs.
04 - In a small bowl, whisk together heavy cream, egg, and vanilla extract until combined.
05 - Pour the wet mixture over the flour mixture. Stir gently with a spatula until just combined, being careful not to overmix.
06 - Gently fold in the chopped strawberries until evenly distributed throughout the dough.
07 - Turn the dough onto a lightly floured surface. Pat into a 1-inch-thick round and cut into 8 equal wedges. Transfer wedges to the prepared baking sheet.
08 - Brush the tops of each scone with a little extra heavy cream and sprinkle with coarse sugar if using.
09 - Bake for 16 to 18 minutes, or until golden brown and cooked through. Cool slightly on a wire rack before serving.