Ingredients:

  Amount  Measure       Ingredient -- Preparation Method
--------  ------------  --------------------------------
     1/2  cup           unsweetened cocoa powder
   1      4 oz. jar     prunes
   3                    egg whites
   1      cup           sugar
   1      teaspoon      salt
   1      teaspoon      vanilla
     1/2  cup           flour
     1/4  cup           nuts -- (optional)

Preparation:

Preheat oven to 350 degrees. Spray an 8-inch square baking pan with cooking spray. Combine all ingredients. Add nuts if desired. Bake about 30 minutes or until springy to touch. Cool on rack. Cut into 16 pieces.