My mother sent me this unusual recipe back in the 70's. I was baking rolls in a health food restaurant at the time. The restaurant wanted me to come up with a dessert for the menu, so I made my mother's recipe using wholewheat flour, turbinado sugar and organic walnuts*. It was an enormous success! You should note there is no liquid in this recipe. The moisture that binds the ingredients comes from the eggs, oil and fresh apple slices. A pretty good electric mixer and/or strong arm is required to incorporate all the flour no matter what kind of flour you use. The result is more like a stiff dough than any cake batter I've ever seen. I continue to make this cake with wholewheat flour and turbinado sugar because I like the result. You, of course, may use any flour and sugar you want. *Nostalgia Note: In 1974, organic walnuts came from a tree in their original packaging called a shell. To use the nut, the shell had to be broken with something hard called a nut cracker and then the nutmeat was picked out; repeat until the amount of nutmeats equal what the recipe calls for. Today, walnuts come in a bag and if there are any shells involved you can lodge a complaint.