4    Egg whites
1/3 c  Oil
1/4 c  Nonfat yogurt
1 ts Vanilla
1 1/3 c  Sugar
1/2 c  Cocoa powder
1 1/4 c  Flour
1/4 ts Salt

-TOPPING –
1 tb Confectioners sugar

Heat oven to 350 degrees. Oil bottom of 9-inch square pan. Place egg
whites in a large bowl. Beat until slightly frothy. Add oil, yogurt and
vanilla, mix well. Add sugar and cocoa, mix well. Add flour and salt. Mix
until blended. Pour into pan. Bake at 360 degrees for 26-28 minutes.
Avoid over baking. Dust with confectioners sugar.