Preheat oven to 425°.
Pour the cranberries into the crust and sprinkle 1/3 cup sugar over them. Set aside.
In a mixing bowl, sift together 2/3 cup sugar and the flour.
In a separate bowl, beat the egg white until stiff.
Fold the beaten egg white into the flour mixture then slowly stir the cream in until combined.
Pour the cream mixture over cranberries.
Bake at 425° for 10 minutes then lower the oven to 350° and bake for another 40 minutes.