Lighter Pound Cake

Ingredient :

2 1/4 cups flour,all-purpose
3/4 teaspoon baking powder
1/4 teaspoon baking soda
1/4 teaspoon salt
1/8 teaspoon mace,ground
1/2 cup margarine,corn oil
1 cup sugar
3 egg whites
1 1/2 teaspoons vanilla extract
3/4 cup buttermilk

Method :

Preheat oven to 350 degrees. Spray an 8 1/2 by 4 1/2 inch loaf pan with
nonstick cooking spray. In a bowl, combine flour, baking powder, baking
soda, salt and mace. Mix well and set aside. In a mixing bowl, cream
margarine and sugar together until smooth. Add egg whites and vanilla;
blend until smooth. Alternately add flour mixture and buttermilk to batter
in two additions each, blending well after each addition. Spoon batter
into prepared pan and bake for 1 hour. Let cake cool before slicing.