Preheat oven to 450 degrees and line a baking sheet with parchment paper.
Wash, hull and slice strawberries. Toss the strawberries in the sugar and let them sit to bring out their natural juices.
Sift together the flour, sugar, baking powder and salt. Cut in the cold butter with a pastry knife or pulse in a food processor a couple of times. You want the dough to resemble course crumbs with some larger pieces of butter mixed through. Combine the egg and buttermilk in a separate small bowl and add to the flour mixture all at once. Stir to moisten, being careful not to overmix.
Turn the dough onto a floured surface; knead gently for about 30 seconds to bring the dough together. Pat or roll into a circle shape that is about 1/2 inch to 3/4 inch in depth. Using a heart shaped biscuit cutter or cookie cutter cut out shortcakes and transfer to the prepared baking sheet.
Bake until golden brown around the edges, about 10 minutes. Cool and then split the shortcakes in half; butter the bottom half if desired. Spoon the strawberries over the bottom half, top with whipped cream if desired, and place the top on each heart.
Notes
Servings:
Depending on the size of your heart-shaped cutter, you can usually make between 6 and 9 shortcakes.