Beat egg whites until stiffing and foamy. Gradually add sugar, beating continuously, until soft peaks are formed. Add macadamia nuts. Grease two 18x12x1-inch cookie sheets and dush lightly with flour. Pour mixture into sheets and spread thin. Bake in preheated oven 300 degrees until golden brown about 30 minutes. Set aside to cool. Filling: 1 c sugar 1/2 c water 1 ts corn syrup 8 egg yolks 1/3 lb margarine 1/2 c macadamia nuts; chopped Put sugar, water and corn syrup in saucepan and set to boil without stirring. When thick enough to form a soft ball, remove from heat and cool. Beat egg yolks until lemon colored; beating well, add syrup mixture. Spread layers with butter mixture and put together one on top of the other, sandwich fashion. Spread top layer and side with more of the butter mixture. Sprinkle with chopped macadamia nuts. Chill before serving.