For the cake:
1 cup all-purpose flour
1 cup whole wheat pastry flour
1 ½ teaspoons baking powder
1 ½ teaspoons baking soda
1 ½ teaspoons ground cinnamon
½ teaspoon apple pie spice
½ teaspoon salt
¾ cup Splenda® Granulated Sweetener
½ cup canola oil
½ cup 1% lowfat milk
1 large egg, lightly beaten
1 tablespoon apple juice or apple cider
1 teaspoon vanilla extract
1 ½ cups chopped apple
½ cup chopped walnuts
For the topping:
1 cup whole wheat pastry flour
½ cup Splenda® Granulated Sweetener
1 teaspoon ground cinnamon
½ teaspoon baking powder
¼ cup canola oil
¼ cup chopped walnuts