Using a medium skillet, add butter and place over medium heat.
Once butter has malted, add rum; stir until well combined.
Press brown sugar onto the cut sides of banana halves. Place bananas cut-side down in skillet. Cook for 2-3 minutes, or until bananas are golden brown and caramelized. Remove skillet from heat and set aside.
For the Bread
Preheat oven to 350°F.
Grease and flour a 9”x5” loaf pan. Line pan with parchment paper, letting excess paper extend over sides of the pan. Set pan aside.
Using a stand mixer, cream the butter and sugar together until light and fluffy (~2-3 minutes on medium speed.)
Add eggs, bananas and vanilla extract; stir until just combined.
Using a separate bowl, combine flour, baking powder, baking soda, cinnamon and salt.
Add half of flour mixture to the bowl with the banana mixture; stir until well combined. Repeat with remaining flour mixture.
Add ½ cup of chopped pecans; stir until well combined.
Transfer mixture into prepared loaf pan. Sprinkle remaining ¼ cup of pecans on top.
Place banana halves cut-side up on top of batter. Drizzle any remaining rum sauce (from skillet) on top of bread.
Bake for 40 minutes. Tent pan with foil and continue baking for 20-25 more minutes, or until a toothpick inserted into center of bread comes out mostly clean.
Let bread cool in pan for 10 minutes before transferring to a wire rack to finish cooling.