1. Combine ingredients for apple mixture. Place into greased 16- by 10-inch baking pan.
2. Beat egg whites until stiff. Add sugar and beat until peaks form. Fold in yolks. Sift dry ingredients. Fold gently into egg mixture, alternating with liquids. Pour over apple mixture.
3. Bake at 350 degrees Fahrenheit for one hour. Serve warm or chilled.