Sweet Potato Coffee Cake

1 cup whole wheat flour; 1 cup flour
1 1/2 teaspoons baking powder
1 teaspoon cinnamon; 1/2 teaspoon nutmeg
1 teaspoon grated orange zest
1/2 cup brown sugar; 1/2 cup maple syrup
1 teaspoon vanilla
1 cup cooked, mashed orange sweet potatoes
1 egg; 1 egg white
1/2 cup nonfat sour cream
3/4 cup orange juice
2 tablespoons olive oil
1 cup raisins; 1/2 cup dried cranberries

1 1/2 cups powdered sugar
1/4 cup orange juice

1. Mix flours, baking powder, cinnamon, nutmeg, and orange zest. Set aside.
2. Mix sugar, maple syrup, vanilla, sweet potatoes, egg, egg white, sour cream, orange juice, and olive oil. Blend well.
3. Combine flour and sweet potato mixtures. Fold in raisins and cranberries, and pour into a baking pan coated with cooking spray. Bake at 350 degrees, one hour for an 11- by 7-inch pan, and 45 minutes for a 9- by 13-inch pan.
4. While cake is baking, prepare glaze in a small bowl. Spoon over cake when cooled.

Nutrition info per serving (based on 15 servings): 240.2 calories; 2.5 g fat; 0.4 g saturated fat; 12.6 mg cholesterol; 3.5 g protein; 53 g carbohydrates; 1.9 g fiber; 65.4 mg sodium