In a medium bowl, combine the sliced strawberries and granulated sugar. Toss gently to coat and set aside for about 30 minutes to let the juices release.
Preheat your oven to 425°F (220°C) and line a baking sheet with parchment paper.
In a large bowl, mix together the flour, baking powder, and salt.
Add the chilled cubed butter to the flour mixture, using a pastry cutter or your fingers to blend until the mixture resembles coarse crumbs.
Pour in the heavy cream and vanilla extract, stirring gently until just combined to form a soft dough.
Turn the dough out onto a lightly floured surface and gently knead it a few times until it comes together.
Pat the dough into a rectangle about 1-inch thick. Use a round cutter to cut out shortcake rounds and place them on the prepared baking sheet.
Bake in the preheated oven for 12-15 minutes or until golden brown. Remove from the oven and allow to cool slightly.
To assemble, slice each shortcake in half horizontally. Layer the bottom half with some of the macerated strawberries (with juices) and a dollop of whipped cream.
Place the top half of the shortcake over the cream and strawberries, and add more strawberries and whipped cream on top if desired.
Dust with powdered sugar before serving.
Notes
Serve on individual plates with extra sliced strawberries and a drizzle of cream for an elegant touch.