Begin by preheating your oven to 350 degrees F (175 degrees C). Prepare a 10-inch tube pan by greasing and flouring it generously.

In a small bowl, create the cinnamon-sugar mixture by combining the white sugar and ground cinnamon. Set this mixture aside for later use.

In a large mixing bowl, combine the all-purpose flour, white sugar, baking powder, and salt. Thoroughly incorporate the vegetable oil, beaten eggs, orange juice, and vanilla extract until the mixture is well combined.

Pour half of the batter into the prepared tube pan. Layer half of the sliced apples on top, followed by half of the cinnamon-sugar mixture. Repeat this process with the remaining batter, apples, and cinnamon-sugar.

Bake in the preheated oven for approximately 70 to 90 minutes, or until a toothpick inserted into the center comes out clean. Once baked, allow the cake to cool briefly in the pan. Use a table knife to gently run around the edges to loosen the cake. Carefully invert the cake onto a serving plate or rack and allow it to cool completely.