Cinnamon Banana Nut Muffins for 12

Instructions:

1. Preheat your oven to 375°F (190°C) and line a 12-cup standard muffin tin with paper liners.
2. In a medium bowl, whisk together the flour, baking soda, baking powder, salt, cinnamon, and nutmeg until no clumps remain.
3. In a large bowl, mash the bananas until smooth. Stir in the melted butter and brown sugar until combined.
4. Beat the egg and vanilla extract into the banana mixture until glossy and uniform.
5. Gently fold the dry ingredients into the wet mixture using a rubber spatula, stopping as soon as no streaks of flour remain.
6. Stir in the chopped walnuts or pecans.
7. Divide the batter evenly among the muffin liners. Sprinkle the tops with granulated sugar and extra cinnamon.
8. Bake for 20 minutes or until a toothpick inserted into the center comes out clean. Transfer to a wire cooling rack.