Preheat your oven to 350°F (175°C) and grease a 9x5 inch loaf pan.

In a large mixing bowl, whisk together the flour, sugar, baking soda, cinnamon, salt, nutmeg, and pecans until evenly combined.

In a separate bowl, mash the ripe bananas until smooth and mix in the eggs, melted butter, buttermilk, brown sugar, and vanilla until uniform.

Gently fold the wet ingredients into the dry ingredients until just combined, being careful not to overmix.

Pour the batter into the prepared loaf pan and smooth the top with a spatula.

Bake for 55-60 minutes until the top is golden brown and a toothpick comes out clean.

Allow the loaf to cool in the pan for 10 minutes, then transfer to a wire rack to cool completely.