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 evenly combined.
03 - Add cold cubed butter to the flour mixture. Use a pastry cutter or your fingers to rub it in until the mixture resembles coarse crumbs with some pea-sized butter pieces remaining.
04 - In a small bowl, whisk together heavy cream, egg, and vanilla extract until fully blended.
05 - Pour the wet mixture over the flour mixture. Stir gently with a spatula or wooden spoon until just combined. The dough will be shaggy and slightly sticky.
06 - Gently fold in the chopped strawberries using light folding motions. Take care not to overmix or the scones will become tough.
07 - Turn the dough onto a lightly floured surface. Pat gently into a 1-inch-thick round. Cut into 8 equal wedges using a sharp knife or bench scraper. Transfer wedges to the prepared baking sheet, spacing them 2 inches apart.
08 - Brush the tops of each scone with a thin layer of heavy cream. Sprinkle with coarse sugar if using, for a crunchy sweet topping.
09 - Bake for 16 to 18 minutes until golden brown on top and a toothpick inserted into the center comes out clean. The tops should be lightly firm to the touch.
10 - Let scones cool on the baking sheet for 5 minutes, then transfer to a wire rack. Serve warm or at room temperature. Best enjoyed the same day but can be stored in an airtight container for up to 2 days.