From my mother-in-law's kitchen; Ingredients 2 cups all-purpose flour 2 teaspoons baking powder 1/2 teaspoon baking soda 1 teaspoon fine sea salt 3 very ripe bananas, about 1 cup mashed 8 tablespoons unsalted butter 1 cup dark brown sugar 2 large eggs 3 tablespoons sour cream 1