Preheat oven to 350°F (175°C). Line or grease loaf pan like a domestic goddess with boundaries.
Mash bananas in a large bowl. Add peanut butter, melted oil, sugar, milk, and vanilla. Whisk until smooth-ish.
In another bowl, mix flour, baking soda, salt, and cinnamon. Combine dry into wet and stir with gentle defiance.
Fold in chocolate chips with the grace of someone who absolutely deserves them.
Pour batter into the loaf pan. Smooth it like your forehead after ignoring texts.
Bake for 55 minutes, or until a toothpick comes out mostly clean—melty chocolate doesn’t count.
Cool for 10 minutes in the pan. Then remove, slice, and serve with smug satisfaction.