Slice the hulled strawberries lengthwise and divide them equally among 4 chilled martini glasses or ramekins.
In a medium-sized mixing bowl, combine the Greek yogurt and strawberry preserves.
Stir until the mixture is smooth and evenly blended.
Carefully dollop the yogurt mixture on top of the sliced strawberries. For a more elegant presentation, transfer the yogurt mixture to a piping bag and pipe a rosette onto each parfait.
Garnish each parfait with a whole strawberry and a fresh mint sprig.
Serve immediately and enjoy.
Chill your serving glasses in the freezer for 15 minutes before assembling for an extra refreshing treat, especially on a warm day.