Sift dry ingredients together in a large mixing bowl. Add the wet ingredients - vanilla, eggs, oil and orange juice - to flour mixture. Mix by hand for 5-10 minutes until very thick.
Grease and flour a tube or bundt pan. Layer apple slices in an overlapping pattern on the bottom of the prepared pan. Sprinkle with cinnamon sugar mixture. Put 1/2 cake batter on top of the apples. Layer remaining apple slices and sprinkle remaining cinnamon sugar, followed by the rest of the batter.
Bake for 1 hour 15 minutes. Allow cake to cool to room temperature on a wire rack before turning it out of the pan.