Ingredients:

  Amount  Measure       Ingredient -- Preparation Method
--------  ------------  --------------------------------
     2/3  cup           margarine
   4      packages      Sweet 'n Low or 2 or 3 tsp.
   2                    eggs (separated) -- stiffly beaten
   1      cup           mashed bananas
   1 1/2  cups          flour
   1      teaspoon      baking soda
     1/4  teaspoon      baking powder
     1/4  teaspoon      salt
     1/4  cup           sour cream
     1/2  teaspoon      vanilla
     1/2  cup           chopped nuts

Preparation:

Cream Sweet 'n Low and margarine. Add egg yolks and mix well. Add banana, sift dry ingredients. Add alternately with sour cream to shortening mixture. Mix real well. Add vanilla, stiffly beaten egg whites and nuts. Pour into two 8x8 or 9x9 inch square pans. Does not rise like regular bar