Preheat oven to 350 degrees, pre-grease muffin tins.
Mash up a bunch of old bananas, minimum of 3, and measure how many cupfuls you have.
For each cup of mashed banana add in order mixing after each addition:
1/2 cup vegetable oil
1/2 cup white sugar
1/2 cup brown sugar
1 egg, beaten
1 tsp. of baking soda dissolved in 1 Tbsp. hot water
1 1/2 cups white flour
1/2 tsp. salt
1/2 tsp. vanilla
Then add chocolate chips 1/2 cup for each cup of mashed banana.
Scoop into muffin tins, 2/3 full. Bake for 18 minutes, check for doneness, bake longer if necessary, pullout sooner if needed.