Banana Pound Cake

Ingredients 2 1/2 cups all-purpose flour 1 teaspoon baking powder 1/2 teaspoon baking soda 1/2 teaspoon salt 1 cup unsalted butter, softened 2 cups granulated sugar 4 large eggs 1 teaspoon vanilla extract 1 cup mashed ripe bananas (about 2-3 bananas) 1/2 cup sour cream or Greek yogurt