Preheat oven 350F degrees. Line muffin pan with muffin papers or reusable muffin liners.

In a food processor, standing mixer, or large bowl, mash the banana well until smooth (pureed).

Mix together sugar, oil, flax egg, pureed banana, applesauce, vanilla, and vinegar.

Add all remaining ingredients except for chocolate chips.

Once the batter is combined, stir well but don’t overmix! Fold in chocolate chips with a spatula.

Fill each muffin cup ⅔ of the way full for 12 muffins. If you want fluffier muffins, fill the muffin cups ¾ of the way full, just know this will make fewer muffins.

Bake for 20-25 minutes at 350F degrees. Enjoy!