Peanut Butter–Banana Bread

INGREDIENTS

• 1 1/2 cups mashed ripe banana
• 1/3 cup plain fat-free yogurt
• 1/3 cup creamy peanut butter
• 3 tablespoons butter, melted
• 2 large eggs
• 1/2 cup granulated sugar
• 1/2 cup packed brown sugar
• 6.75 ounces all-purpose flour (about 1 1/2 cups)
• 1/4 cup ground flaxseed
• 3/4 teaspoon baking soda
• 1/2 teaspoon salt
• 1/2 teaspoon ground cinnamon
• 1/8 teaspoon ground allspice
• 2 tablespoons chopped dry-roasted peanuts
• Cooking spray
• 1/3 cup powdered sugar
• 1 tablespoon 1% low-fat milk
• 1 tablespoon creamy peanut butter