Healthy-ish Carrot Cake Bars

INGREDIENTS:
Non-stick cooking spray
2 cups wheat flour
1 cup packed brown sugar
3/4 cup granulated sugar
2 tsp. cinnamon
1/2 tsp. nutmeg
1 1/2 tsp. baking powder
1 1/2 tsp. baking soda
1 cup slightly beaten egg whites
1/2 cup applesauce
1/2 cup cooking oil
3 cups finely shredded carrots
1 cup crushed pineapple
3/4 plus 1/2 cup chopped walnuts

INSTRUCTIONS:
Preheat the oven to 350.  Coat a 15x10" pan with cooking spray.  Set aside.  In a large mixing bowl, stir together flour, brown sugar, granulated sugar, cinnamon, baking powder, and baking soda.  In a medium bowl, stir together egg whites, applesaude and oil.  Stir into flour mixture.  Stir in shredded carrot, pineapple, and 3/4 cup walnuts.  Spread batter in the prepared pan.  Bake until a toothpick inserted near the center comes out clean.  25 to 30 minutes.  Cool completely on a wire rack.  Once cooled, top with cream cheese frosting (found here).  http://candisrecipecollection.blogspot.com/search/label/Baking  Sprinkle remaining walnuts on top of frosting.  Cut into bars before serving.