Preheat oven to 350 Degrees Fahrenheit
Line baking sheet with wax paper or something to prevent it from sticking. (I use a reusable silicone mat.)
Mash banana, egg, and and Sunbutter together.
Stir flour, and baking soda together.
Combine dry ingredients with wet ingredients. See my video below for the next couple steps.(Learn from my mistakes! Do it separately first!) Fold in chocolate chips. (I do this last in order to minimize chunks of flour in the previous mixing process.)
Bake for 10 minutes.(If you don't believe in preheating, probably 12 minutes. But try to believe in preheating!) It will naturally look golden brown, so look for how firm the cookie looks. Take them a little underbaked for that soft and gooey center.
Allow to cool for a minute, if you can stand it. I always pop one in my mouth the second it isn't scorching hot. (If it cools too much you can microwave it for 5-8 seconds to warm it up.)