Banana Bread

INGREDIENTS

• 1 cup sugar
• 3 tablespoons sour cream
• 1 cup mashed ripe banana (about 2 large or 3 medium bananas)
• 1 cup nuts, such as walnuts, pecans, macadamia nuts, or hazelnuts, toasted and coarsely chopped, or 3/4 cup semisweet or bittersweet chocolate chips or mini chocolate chips*
• 1/2 teaspoon salt
• 1 large egg, at room temperature
• 8 tablespoons (1 stick) unsalted butter, at room temperature, plus additional butter for greasing pan
• 1/2 teaspoon baking soda
• 1 2/3 cups all-purpose flour, plus additional flour for dusting pan
• 1 teaspoon pure vanilla extract
• 1 teaspoon baking powder