01 - Preheat oven to 400°F. Line baking sheet with parchment paper.
02 - Whisk flour, sugar, baking powder, and salt in large bowl.
03 - Add cold cubed butter. Work into flour with pastry cutter or fingertips until mixture resembles coarse crumbs.
04 - Whisk cream, egg, and vanilla in separate bowl.
05 - Pour wet ingredients into dry ingredients. Mix gently until just combined. Avoid overmixing.
06 - Gently fold diced strawberries into dough.
07 - Turn dough onto floured surface. Pat into 1-inch-thick circle, about 7 inches in diameter.
08 - Cut into 8 wedges. Transfer to prepared baking sheet, spacing apart.
09 - Brush tops with cream and sprinkle with coarse sugar if desired.
10 - Bake 16-18 minutes until golden brown.
11 - Cool on wire rack 10 minutes before serving.