Rich Fat-Free Gingerbread (Kopie)

*****
Ingredients
•1 1/4 cups unbleached all-purpose flour
•3/4 cup boiling water
•1/2 cup molasses
•1/4 cup prune puree
•1/4 cup brown sugar, packed
•1 tsp baking powder
•3/4 tsp baking soda
•1 tsp ground cinnamon
•1 tsp ground ginger
•1/4 tsp ground cloves
•1/4 tsp salt
•2 egg whites, lightly beaten
•3/4 cup raisins

Instructions
Preheat oven to 325 degrees Fahrenheit. Sift together flour, baking powder, cinnamon, ginger, cloves and salt in a large bowl. Combine prune puree and sugar in a separate container. Stir in ½ teaspoon baking soda and molasses. Add the remaining 1/4 teaspoon of the baking soda to the boiling water. Stir prune puree mixture and the boiling water into the flour mixture alternately, stirring to combine. Fold in egg whites and raisins. Spray 8 x 8 baking pan with nonstick zero-calorie cooking spray, then sprinkle lightly with flour. Spread batter evenly in pan, and bake 30 minutes or until a toothpick inserted in center comes out clean. Remove from pan and cool on wire rack, then cut into squares.