method
1. Peel the bananas and cut them in half lengthwise. Melt the butter in a large skillet over moderate heat.
2. Lay the bananas in the pan, cut side up, and brown the underside, this will take about 1 1/2 minutes.
3. Sprinkle them with half the sugar and turn them over. Sprinkle them with the remaining sugar and the nutmeg.
4. Pour the orange juice over and cook for 2 minutes more.
5. Transfer to a warm serving dish and scatter the walnuts over if used.
