Preheat an oven to 350 degrees F and grease a bread pan (not a large pan - see note).
In a medium bowl, whisk together the flour, baking soda, baking powder, cream of tartar, and salt. Set aside.
2 Cups All-Purpose Flour, 1 teaspoon Baking Soda, ½ teaspoon Baking Powder, 1 ¼ teaspoon Cream of Tartar, ½ teaspoon Salt
In the bowl of a mixer, add the canola oil and sugar.
½ Cup Canola Oil, ⅔ Cup Granulated Sugar
Add the egg and mix again.
1 Large Egg
Dump in the zucchini and mix on medium speed until everything is evenly combined.
1 Cup Finely Grated Zucchini
Starting and ending with the flour, add a little flour while the mixer is running on low.
Next add a little mashed banana and continue to alternate until the last of the flour is added.
1 Cup Mashed Banana
Fold in the chocolate chips and pour into a greased bread pan. *See note below for instructions to make muffins.
1 ½ Cups Chocolate Chips
Bake at 350 degrees F for 50-55 minutes, tenting with foil the last 15 minutes to avoid too much browning.
Allow to cool before slicing, then serve warmed up with a little butter.
Video
Notes
Note that lighter bread pans provide better results than the dark pans.
To make muffins, fill the greased muffin tin cups about 2/3 full (use liners if you want) and bake at 350 degrees for 18-22 minutes. It will make about 18 muffins.
Chocolate Chip Zucchini Banana Bread can be frozen for up to 3 months.