Preheat oven to 350°F. Butter and flour a 13 x 9 inch pan; set aside.
In a large mixing bowl, combine first 5 ingredients.
Fold in to dry ingredients, the applesauce, oil, and whole eggs, until just barely mixed. Add zucchini, walnuts, and raisins (leave out, if you don't like them). Fold, until just combined.
Whip egg whites to stiff peaks and gently fold in. Do not overmix.
Pour batter into pan and bake 35-40 minutes, or until toothpick inserted in center comes out clean. Cool slightly, sprinkle with a dusting of confectioners' sugar, and serve warm. Or ice the cake with Michelle's Frosting.
MICHELLE'S FROSTING: In a small mixing bowl, beat cream cheese with butter, milk, and vanilla. Gradually, beat in confectioners' sugar, and mix until smooth. Spread on cake, and if you want to talk small children into eating it, add a few colored sprinkles. That always gets them. Don't tell them it's cream cheese.