Banana Cake

INGREDIENTS:

1 c Sugar
1/2 c Shortening
1 Egg
1 c Mashed ripe banana
1 ts Baking soda; dissolved in:
1 tb Water
1 1/2 c Flour
1/2 ts Baking powder
1/2 ts Salt
1 ts Vanilla
1/2 c Chopped walnuts (my
-addition)