Instant Pot Banana Bread

Ingredients (13)

• 1 cup all-purpose flour
• 1/2 teaspoon baking powder
• 1/4 teaspoon baking soda
• 1/2 teaspoon salt
• 1/4 teaspoon ground cinnamon
• 2 large eggs
• 1/3 cup sugar
• 1/3 cup sour cream
• 1/4 cup unsalted butter, melted
• 1/2 teaspoon pure vanilla extract
• 1/2 cup mashed ripe banana (about 1 large banana)
• 1/2 cup coarsely chopped walnuts
• 1 cup confectioners' sugar, optional