Classic Banana Nut Muffins: Moist

Ingredients

• 1¾ cups (220 g) all-purpose flour, spooned and leveled
• 1 teaspoon baking soda
• ½ teaspoon salt
• 1 teaspoon ground cinnamon (optional, but recommended)
• ½ cup (113 g) unsalted butter, melted and cooled slightly
• ¾ cup (150 g) granulated sugar
• 2 large eggs, at room temperature
• 3 ripe bananas (about 1½ cups mashed)
• 1 teaspoon pure vanilla extract
• ½ cup (120 ml) buttermilk or plain yogurt
• 1 cup (120 g) toasted walnuts, coarsely chopped