DIRECTIONS
In a large mixing bowl, combine the first six ingredients. Gradually add buttermilk, applesauce, carrots, zucchini and vanilla. In a small mixing bowl, beat egg whites until soft peaks form; gradually beat in sugar, 1 tablespoon at a time, until sugar is dissolved. Gently fold into batter.
Pour into a 13-in. x 9-in. baking dish coated with cooking spray. Bake at 350° for 30-40 minutes or until a toothpick inserted near the center comes out clean. Cool on a wire rack. For frosting, in a mixing bowl, beat cream cheese, marshmallow creme, orange juice and vanilla just until combined. Frost cake. Yield: 12 servings.