Contributed by Kymythy Schultze, Affenbar Newfoundlands
In mixing bowl, beat together mashed banana and butter until creamy. Add eggs and water. Beat well. Stir in dry ingredients. Beat until smooth. Add nuts and raisins. Spoon batter evenly into oiled and floured bundt pan. Bake at 350 degrees for about 35 minutes. Cool on wire rack 5 minutes, remove from pan, replace on rack and cool.
Optional Frosting: Blend thoroughly and spread on cool cake. Sprinkle with chopped pecans. The frosting contains carob, which is a safe (almost tastes like) chocolate substitute