2 1/2 cups unbleached all-purpose flour
1/2 teaspoon baking soda
3/4 cup dark brown sugar
1/4 teaspoon ground cinnamon
2 cups smashed bananas (about 4 to 6 bananas)
1/2 cup vegetable oil
1/2 cup milk
2 large eggs, at room temperature
1/8 teaspoon fine salt
1/2 teaspoon pure vanilla extract
3/4 cups chopped walnuts