Ingredients:

  Amount  Measure       Ingredient -- Preparation Method
--------  ------------  --------------------------------
   1 3/4  cups          flour
   2      tsp           baking powder
     1/4  tsp           baking soda
     1/2  tsp           salt
     1/3  cup           shortening
     2/3  cup           sugar
   2                    eggs -- well beaten
   1 1/2  cups          well mashed -- overripe banana (2
                        or 3 bananas)
     1/2  cup           coarsely chopped walnuts (optional)

Preparation:

Sift together the flour, baking powder, baking soda and salt. With the electric beater on low, fluff the shortening in a small bowl, until soft and creamy. Add the sugar gradually. Beat in the eggs in a slow stream. With a fork, beat in 1/3 of the flour mixture, 1/2 the bananas another 1/3 of the flour mixture, the rest of the bananas then the last of the flour mixture. Fold in the walnuts. Turn into a greased and floured baking unit or a 2 1/2 quart mold and cover. Place on a rack in the slow cooker. Cover the cooker, but prop the lid open with a toothpick or a twist of foil to let the excess steam excape. Cook on high for 4 to 6 hours. Cool on a rack for 10 minutes. Serve Warm.