Carrot-Zucchini Bars

Ingredients

• 1 1/2 c. all-purpose flour
• 1/2 c. whole wheat flour
• 2 tsp. baking powder
• 1 1/2 tsp. cinnamon, ground
• 1/2 tsp. salt
• 1/2 c. margarine, softened
• 1 tsp. vanilla
• 1 c. white sugar
• 2 large eggs
• 2 tsp. grated orange rind
• 1 c. grated carrot
• 1 c. grated zucchini
• 1 c. walnuts, chopped