Banana Split with icing

2 1/4 cups all-purpose flour 1 teaspoon baking soda 1/4 teaspoon salt 3/4 cup butter , softened 1 1/2 cups granulated sugar 3 eggs 1 1/2 teaspoons pure[...]

3 -4 bananas (yellow and ripe, but not brown) 1/2 gallon vanilla ice cream , the cardboard paper box kind (very hard, NOT softened) 1 cup chopped walnuts 1[...]