Preheat oven to 350 degrees F (175 degrees C). Grease and flour a 10 inch Bundt or tube pan. In a medium bowl, combine the diced apples, 1 tablespoon white sugar and 1 teaspoon cinnamon; set aside. Sift together the flour, baking powder and salt; set aside.
2
In a large bowl, combine 2 cups white sugar, oil, orange juice, vanilla and eggs. Beat at high speed until smooth. Stir in flour mixture. Fold in chopped walnuts.
3
Pour 1/3 of the batter into prepared pan. Sprinkle with 1/2 of the apple mixture. Alternate layers of batter and filling, ending with batter.
4
Bake in preheated oven for 55 to 60 minutes, or until the top springs back when lightly touched. Let cool in pan for 10 minutes, then turn out onto a wire rack and cool completely. Sprinkle with confectioners'' sugar.
