Toss the apples with lemon juice to prevent darkening.
MIx dry ingredients, including 2 cups sugar.
Make a hole in center and add eggs, juice, oil and vanilla.
Beat with mixer for 2 minutes. The batter will be thick.
Pour half of the batter into greased and floured 10 inch tube pan. Arrange half the apples over the top of batter and sprinkle with cinnamon and sugar which have been mixed together. You can add 1/2 cup chopped walnuts if desired. Cover with remaining batter and top this with remaining apple slices and sprinkle the same way with the sugar-cinnamon-nut mixture. Bake for 1 hour and 20 minutes to 1 and 1/2 hours at 350 degrees.