Banana Bar – 2 cups (240 g) all purpose flour – 1 teaspoon ground cinnamon – ¾ teaspoon baking soda – ½ teaspoon salt – 1¼ cups mashed bananas about 2 medium banana – ½ cup (113 g) unsalted butter, melted and cooled to warm – 1¾ cups (350 g) granulated sugar – 2 large eggs (US), room temperature – 1 cup (240 g) sour cream, room temperature – 2 teaspoons (10 ml) vanilla extract Cream Cheese Frosting for Banana Bar – 8 oz. (226 g) cream cheese, room temperature – ½ cup (113 g) unsalted butter, room temperature – 2 teaspoons (10 ml) vanilla extract – ¼ teaspoon salt – 3½ cups (420 g) powdered sugar – 1 tablespoons (15 ml) milk, as needed