Preheat your oven to 350°F (175°C) and grease a 10-inch tube pan.

In a large bowl, combine 3 cups of all-purpose flour, 2 cups of sugar, 1 tablespoon of baking powder, and 1 teaspoon of salt.

In another bowl, whisk together 4 large eggs, 1 cup of canola oil, 1/3 cup of orange juice, and 2-1/2 teaspoons of vanilla extract.

Pour the wet mixture into the dry ingredients and stir gently until just combined.

Toss the sliced apples with 2 teaspoons of ground cinnamon and 1/4 cup of sugar.

Layer one-third of the batter in the pan, half of the apple mixture, and repeat, finishing with the batter.

Bake for 55 to 65 minutes, or until a toothpick comes out clean. Let cool for 15 minutes.

Invert the cake onto a wire rack and dust with confectioners' sugar before serving.