In a mixing bowl, mash the ripe bananas until smooth. Add the egg, buttermilk, brown sugar, and vegetable oil. Whisk until well combined.
In a separate bowl, whisk together the all-purpose flour, baking powder, baking soda, and salt until there are no lumps.
Pour the dry ingredients into the banana mixture. Gently fold together using a spatula until just combined. Fold in the toasted pecans.
Preheat your non-stick skillet or griddle over medium heat and lightly grease it.
Pour about ¼ cup of batter onto the skillet for each pancake. Cook until bubbles form (2-3 minutes), then flip and cook until golden brown (2-3 minutes).
Serve warm with your favorite toppings like maple syrup, banana slices, and extra toasted pecans.