INGREDIENTS
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2 cups plus 1 Tablespoon all-purpose flour, divided 3/4 cup sugar 3/4 teaspoon baking soda 1 teaspoon ground cinnamon 1/2 teaspoon salt 1 1/2 cups mashed ripe, darkly speckled bananas 1/4 cup buttermilk 2 large eggs 6 Tablespoons unsalted butter, mel