Slice the strawberries crosswise. Place them in a medium bowl and sprinkle with 1/3 cup of the sugar. Butter the bread slices, then slice them in half and sprinkle with the remaining sugar. Place the bread on serving plates and spoon the berries on top.
Tip: For a nice crunch and a professional look, substitute coarse demerara or turbinado sugar (available at specialty stores and some supermarkets) for granulated.