Line a muffin pan with 12 cupcake liners, set aside.
In a mixing bowl, mash the bananas and sugar together with a fork until smooth. Stir in the butter, pumpkin, egg and vanilla extract until well combined, set aside.
In a mixing bowl, whisk together the flour, baking soda, pumpkin pie extract, cinnamon and salt.
Stir your flour mixture into the banana mixture just until combined, do not overmix.
Stir in the chocolate chips.
Pour the batter into your prepared muffin pan.
Place the pan into the oven and bake for 20 minutes or until a toothpick is inserted into the center and comes out clean.