Vanilla Cake

1 cup all-purpose unbleached flour
1/2 cup pastry flour
1/4 cup sugar
1 teaspoon baking powder
1/2 teaspoon baking soda
1/8 teaspoon salt
3/4 cup plain yogurt
1/2 cup buttermilk
2 tablespoons canola oil
1 teaspoon vanilla extract
2 egg whites

Preheat oven to 350ºF. Spray an 8" X 8" baking pan with low-fat spray. Sift the dry ingredients and set aside.

Whisk together wet ingredients in a mixing bowl. Add the dry to the wet and mix until most of the lumps are gone. Pour mix into the pan and bake at 350ºF for 30-35 minutes or until knife or toothpick inserted in the center comes out clean.