Ingredients:

  Amount  Measure       Ingredient -- Preparation Method
--------  ------------  --------------------------------
                        ----Batter----
   2 1/2  c             unbleached flour
   2      c             granulated sugar
   2      tsps          cinnamon
     1/2  tsp           nutmeg
     1/4  tsp           ginger
     1/4  tsp           cloves
   1 1/4  tsps          baking powder
     3/4  tsp           baking soda
     1/4  tsp           salt
     1/2  c             margarine -- softened
   3                    egg whites -- whipped
   1 2/3  c             pumpkin
     1/2  c             orange juice -- at room temperature
   1      Tablespoon        orange peel -- grated
                        -----Topping-----
   1      c             powdered sugar -- sifted
   2     Tablespoon        orange juice -- at room temperature

Preparation:

Preheat oven at 350. Prepare a 13 x 9" pan with cooking spray and flour. In a mixing bowl, combine flour, granulated sugar, cinnamon, nutmeg, ginger, cloves, baking powder, baking soda and salt. In another mixing bowl, combine margarine, egg whites, pumpkin, 1/2 cup orange juice, and orange peel. Mix dry ingredients with wet ingredients just until moistened. Pour mixture into prepared pan. Bake 45 minutes. Meanwhile, to prepare topping, combine powdered sugar and orange juice in a small bowl. Spread topping over cooled cake.