Preheat oven to 350 degrees F. In a large bowl combine flour, baking powder, ginger, and baking soda. In another large bowl stir together eggs, carrot, zucchini, brown sugar, raisins, walnuts, oil, honey, and vanilla. Add carrot mixture to flour mixture, stirring just until combined. Spread batter into an ungreased 13x9x2-inch baking pan.

Bake about 25 minutes or until a toothpick inserted in center comes out clean. Cool completely in pan on a wire rack. Frost with Citrus-Cream Cheese Frosting. Cut into bars. Makes 36 bars.

Citrus-Cream Cheese Frosting: In a medium mixing bowl beat one 8-ounce package softened cream cheese and 1 cup powdered sugar with an electric mixer on medium speed until fluffy. If desired, stir in 1 teaspoon finely shredded lemon peel or orange peel.