Carrot Cake

Ingredients

• 3 1/2 cups all-purpose flour
• 1/2 cup granulated sugar
• 1 tablespoon baking powder
• 2 teaspoons baking soda
• 2 teaspoons cinnamon
• 1 teaspoon ginger
• 3/4 teaspoon salt
• 1 cup firmly packed brown sugar
• 1 cup plain nonfat yogurt
• 1/3 cup vegetable oil
• 2 large eggs
• 2 large egg whites
• 2 teaspoons vanilla extract
• 1 pound carrots -- shredded
• 1 3/4 cups confectioner's sugar
• 2 tablespoons fresh orange juice