Using butter or cooking spray, coat a 4 x 8 loaf pan.
In a medium bowl, mash bananas with a fork.
Add butter, egg and vanilla extract and mix.
Add salt, baking soda and sugar to banana mixture and mix well.
Mix in flour 1/2 cup at a time.
Pour the banana bread mixture into your prepared loaf pan. Use a spatula to level the batter out.
Cover loaf pan with a paper towel and then cover with aluminum foil.
Add 1 cup water to your Instant Pot. Insert the Trivet (provided with purchase of Instant Pot) and place your foil covered loaf pan inside the Instant Pot.
Place and secure lid and make sure vent is set to "sealing".
Turn Instant Pot to Manual and 50 minutes. When timer ends, carefully quick release the valve.
Carefully remove loaf pan from the Instant Pot and place on wire cooling rack for 5 minutes.
Rremove bread from loaf pan and continue to cool on wire rack.
Slice and enjoy!
Notes
Alternative Cooking Method:
If using oven, Preheat Oven to 350 degrees F. Prepare pan and batter the same as above.
No need to cover the batter with paper towel or foil.
Bake for 55 minutes or until toothpick comes out clean
Let rest 5 minutes and then remove from pan and continue to cool.