In a mixing bowl, combine the sliced strawberries with the granulated sugar. Gently toss until the strawberries are well-coated. Let them sit at room temperature for at least 30 minutes to allow the natural juices to release, creating a sweet syrup.
Preheat your oven to 425°F (220°C). Line a baking sheet with parchment paper to prevent sticking.
In a large mixing bowl, whisk together the all-purpose flour, baking powder, and salt until well combined.
Add the chilled, cubed butter to the flour mixture. Using a pastry cutter, fork, or your fingertips, work the butter into the flour until the mixture resembles coarse crumbs with pea-sized pieces of butter remaining.
Pour in the milk and vanilla extract, and mix until the dough is just combined. Be cautious not to overmix, as this can lead to tough shortcakes.
On a lightly floured surface, turn out the dough and knead gently 2-3 times until it comes together smoothly. Roll or pat it out to a thickness of about 1 inch.
Use a round cutter (about 2-3 inches in diameter) to cut out shortcakes and carefully place them on the prepared baking sheet. Gather any leftover dough, reroll, and continue cutting out additional shortcakes until all the dough is used.
Bake the shortcakes in the preheated oven for 12-15 minutes, or until they are nicely golden brown on top. Once baked, transfer them to a wire rack to cool slightly.
While the shortcakes cool, prepare the whipped cream. In a mixing bowl, beat the heavy whipping cream with the powdered sugar using an electric mixer until soft peaks form, which should take about 2-3 minutes.
To assemble your delightful shortcakes, slice each baked shortcake in half horizontally. Spoon a generous amount of the macerated strawberries on the bottom half, followed by a heaping dollop of the freshly whipped cream. Place the top half of the shortcake back on to complete the assembly.
Serve your delicious strawberry shortcakes immediately, garnished with a fresh mint leaf for a touch of color and flavor if desired.
Notes
Serve immediately for the best flavor and texture.