Sugarless banana walnut cake

2/3 c  Bananas; mashed
    1/2 c  butter; softened
      3    Eggs
      2 c  All-purpose flour
      2 ts baking powder
      1 ts Baking soda
      1 ts Ground cinnamon
    3/4 c  Water
      1 c  Walnuts; chopped
 
  In a mixing bowl, beat the bananas and butter until creamy.  Add the
  eggs and beat well.  Combine flour, baking powder, baking soda and
  cinnamon;  add to banana mixture alternately with water, beating well
  after each addition.  Stir in nuts.  Spoon into a greased 9-inch
  square baking pan.  Bake at 350F for 30 minutes or until a toothpick
  comes out clean.  Cool.
  
  From:  Mildred Burkett, Greencastle, Pennsykvania