In a medium bowl, combine sliced strawberries and sugar. Let sit for 10 minutes to allow the strawberries to release their juices.
If using store-bought shortcakes, crumble them into bite-sized pieces. If using pound cake, cut or crumble into small pieces.
In serving cups or glasses, layer the crumbled shortcake or pound cake.
Spoon a layer of macerated strawberries and their juices over the cake layer.
Top with a generous dollop of whipped cream.
Repeat layers until cups are filled, ending with a swirl of whipped cream.
Garnish with a fresh strawberry slice and mint leaf if desired.