Bikini Brownies

A recipe for fat free Brownies!
Source
Ingredients

1 cup sugar
3⁄4 cup flour
1⁄2 cup cocoa
2 egg whites (this is for cake like brownies and is optional)
2 teaspoons cornstarch
1⁄4 teaspoon baking soda
1⁄4 teaspoon salt
2⁄3 cup non-fat vanilla yogurt (a 6 oz. container, Dannon works best)
nonstick cooking spray

Directions

Preheat oven to 350°F.
Mix all dry ingredients.
Add yogurt and mix well.
Batter will be very thick.
Spray an 8x8 pan with nonstick cooking spray.
Spread batter evenly.
Bake for 30-35 minutes.
Remove and cool.
Dip a knife in warm water and cut into 16 squares.