Preheat oven to 350 degrees F.
In a medium bowl, add the bananas and mash with a fork until crushed.
Roughly chop up your pecans so that there are some tiny pieces and some larger pieces for variety.
Grease and flour a loaf pan, shaking off any excess flour.
In a large mixing bowl (or bowl of a stand mixer), add the butter and the sugar. Cream together on a high speed until light and fluffy. Mixture should be a pale yellow.
Add the crushed bananas and the eggs to the mixture and beat until combined.
In a medium bowl, add the flour, baking soda, and salt. Stir to combine.
Add the flour mixture and the vanilla to the batter and beat until just combined.
Add most of the chopped pecans to the bowl (reserving a few for sprinkling on top), and stir into the batter with a spoon or spatula.
Pour the batter into the loaf pan. Sprinkle the remaining chopped pecans on top.
Bake for 55 minutes until nicely browned and a toothpick comes out clean.
Cool on a wire rack, and then enjoy!