Cream marg. and sugar in bowl and beat in the egg. Stir together flour,soda,cinn.,nutmeg and salt. Stir into the creamed mixture. Fold in the apples and put into an ungreased square 9x9 sq. pan. Sprinkle the nuts on top. Bake at 350 degrees for 45-50 mins. or until toothpick inserted come out clean. Serve warm or cooled with cool whip or ice cream. ENJOY!!