Preheat the oven to 350°. Spray/grease a 4x8 inch loaf pan. Wash your squash, cut off the ends and grate on a box grater.

In a bowl large enough to mix everything melt the butter. Add in the banana and mash into the butter until smooth.

Add in the baking soda, salt, sugar, egg, vanilla and grated squash. Mix well.

Add in the flours and the chocolate chips and mix until just combined. Pour into the prepared loaf pan and bake for 50-60 minutes.

After 50 minutes check to see if it is done. It is done when a toothpick inserted in the middle of the loaf comes out clean.

Cool in pan then remove. slice and serve. If the bread is going to be eaten in a day or two I store it wrapped on the counter. If it is going to be longer than that I store it wrapped in the fridge then slice and warm as needed.