01 - Preheat oven to 400°F and line a baking sheet with parchment paper.
02 - In a large bowl, whisk together flour, granulated sugar, baking powder, and salt until evenly combined.
03 - Cut cold butter into the dry mixture using a pastry blender or fingertips until the texture resembles coarse crumbs.
04 - In a separate bowl, whisk together milk, egg, and vanilla extract. Pour into dry ingredients and gently mix until just combined, avoiding overworking the dough.
05 - Turn dough onto a lightly floured surface and pat into a 1-inch thick round. Cut out 6 rounds using a 3-inch heart-shaped or round cutter. Arrange on prepared baking sheet.
06 - Brush the tops with heavy cream and sprinkle generously with coarse sugar.
07 - Bake for 15 to 18 minutes until golden brown. Transfer to a wire rack and cool completely.
08 - While shortcakes bake, combine sliced strawberries, granulated sugar, and lemon juice in a bowl. Let sit for at least 15 minutes to release juices.
09 - Beat cold heavy cream, powdered sugar, and vanilla extract with an electric mixer until soft peaks form.
10 - Split each cooled shortcake in half horizontally. Spoon macerated strawberries and juices onto bottom halves, top with whipped cream, and crown with upper halves. Garnish with additional cream and fresh strawberries as desired.