Mix apples with sugar, cinnamon, and flour. Open defrosted package of filo leaves carefully. Cover with plastic sheet. Place one leaf of filo dough on Damp cloth. Brush leaf lightly with melted margarine using pastry brush. Sprinkle with almonds or bread crumbs. Place second filo leaf directly over first, repeating above directions. Place third leaf directly over second. Put half the apple mixture on edge of dough nearest to you on one 3 inch wide strip. Roll like jellyroll with aid of a cloth. Place strudel on buttered cookie sheet and brush top lightly with melted butter or beaten egg yolk. Repeat with the other 3 sheets of filo dough and other one-half of apple mixture. Bake in 375F oven for about 35 minutes until golden brown. Cut into portions and serve while warm.
