Omelet soufflé

Beat the yolks of five eggs very light, adding, gradually, four tablespoonfuls of powdered sugar. In another dish whip the whites to a standing froth. With a few long strokes blend the two; pour into a buttered bake-dish and bake quickly. Sift powdered sugar on the top at the end of two minutes, and very quickly, as the omelet will fall if the oven stands open even a few seconds. Serve at once in the bake-dish.