01 -
Combine strawberries and sugar. Stir and let macerate for 20 minutes. Keep at room temperature or refrigerate.
02 -
Whisk together flour, sugar, salt, and baking powder in a large bowl.
03 -
Add chopped cold butter to the flour mixture. Use a pastry cutter to blend until crumbly with pieces of butter the size of peas.
04 -
Whisk cold buttermilk with the egg in a small bowl. Add to the flour mixture and mix until a shaggy dough forms.
05 -
Turn the dough onto a floured surface and knead briefly, adding cold buttermilk or water if too dry. Roll into a 9×13-inch rectangle, fold several times, and pat to 1 and 1/4 inches thick.
06 -
Use a floured 2 and 1/2-inch biscuit cutter to cut dough without twisting. Reroll scraps to cut additional shortcakes.
07 -
Place shortcakes in a buttered or greased 9×9-inch baking pan, spaced snugly. Freeze for 20 minutes. Meanwhile, preheat the oven to 425°F.
08 -
Brush tops with buttermilk or cream and sprinkle with sugar. Bake for 18-22 minutes until golden brown and firm. Cover with foil if tops brown too quickly.
09 -
Combine heavy cream, powdered sugar, and vanilla. Beat on high speed for 2-5 minutes until peaks form. Refrigerate until ready to use.
10 -
Slice shortcakes in half. Layer strawberries and whipped cream between halves and over the top. Serve immediately.