Banana Bread with buttermilk

3/4 cup butter 1 1/2 cups sugar white, granulated 1 1/2 cups bananas mashed 2 large eggs well beaten 1 teaspoon vanilla extract 2 cups flour, all-purpose 1[...]

1/2 cup (1 stick) butter, at room temperature, plus more for pan 1 cup granulated sugar 2 large eggs 1 1/2 cups unbleached flour 1 teaspoon baking soda 1[...]