This is a VERY famous recipe, that of the notorious OCLC Apple Cake:

pt. 1. Slice 6 med. apples (do NOT peel). - Mix with 5 T. sugar and 2 T. Cinnamon. - Set aside.

pt.2. Mix in second bowl 2 c. sugar, 2 c. flour, 1 t. salt, 1 T
baking powder. - Make well in center and add 4 eggs, 1 c. oil, 1
T. vanilla, and 1/4 c. orange juice (milk or water). - Mix well.

pt. 3. In a tube pan (greased) put 1/3 of the batter, 1/2 apple
mixture, repeat. - Bake at 350 degrees for 1 1/4 hrs. (Possibly
covering for the last 1/2 hr in case it gets too brown.)

Some feel it could use less oil, but it's supposed to be very, very good.