Heat oven to 350. Spray a 10" bundt pan w/ cooking spray. Dust w/ flour. Peel, core apples and slice thin. Place apples in a bowl. Combine in a small bowl, the 5 tbsp sugar and cinnamon. Sprinkle over apples, toss to coat.
In lg bowl, combine flours, 2 cups sugar, baking soda,and baking powder, whisk to blend. Add egg beaters, applesauce, vanilla and orange juice. W/ mixer, blend for 1 min on low. On high, blend for 3 mins.
Pour some batter into pan, then layer w/ some apple mix, then batter, then apples, end w/ batter. Bake 1 hr and 30 min, or until a toothpick inserted in center comes out clean. Let cool, invert onto plate. Make glaze: In bowl, whisk together powdered sugar, butter and water. Pour glaze over cake.