In a large bowl, combine the flour, sugar, oil, eggs, orange juice, salt, baking powder and vanilla. The batter will be very thick. Layer the bottom of a 10” bundt pan with 1/2 of the batter. Then, layer half of the apple mixture. Top with the rest of the batter and finish with a layer of apples on top. Bake at 350 degrees for 2 hours, or until a cake tester comes out clean. Allow to cool for 30 minutes, then remove it from the pan and continue cooling on a wire rack. Keep the cake wrapped to stay fresh.