Nutella Swirled Banana Bread

Bahan-bahan (12 porsi)

• 2 cups all purpose flour
• ¾ teaspoon baking soda
• ½ teaspoon salt
• ¼ cup (½ stick) unsalted butter, (at room temperature)
• 1 cup granulated white sugar
• 2 large eggs
• 1½ cups mashed ripe banana
• ⅓ cup plain yogurt or sour cream
• 1 teaspoon vanilla extract
• ¾ cup Nutella ((chocolate hazelnut spread))