These double chocolate zucchini muffins are THE BEST. So much chocolatey deliciousness in every bite and you'll never guess there's zucchini in there.
Preheat the oven to 425 degrees F. Line a 12-cup muffin tin with paper liners and set aside.
Add the dry ingredients and pour the chocolate chips on top of the dry ingredients. Stir just until no dry streaks remain, being careful not to overmix.
Divide batter evenly between muffin cups (I like to use a #20 cookie scoop). Sprinkle 3-5 chocolate chips on top, if desired.
Bake at 425 degrees F for 5 minutes. Then lower the oven temperature to 350 degrees F and bake an additional 18-20 minutes or until a skewer inserted into the middle of the muffins comes out clean with moist crumbs but not wet batter.
Place muffins on cooling rack to cool 5-10 minutes before carefully removing from the muffin tins to cool completely (about an hour). Store covered well for about three days or muffins can be frozen (see note).
1. For a honey-sweetened variation, you can substitute 8-ounces or ⅔ cup of raw honey for the light brown sugar in this recipe. Baking temperature and time is about the same.
2. To freeze muffins, cool completely and then pack into gallon freezer bags and seal. For best results, freeze the same day as baked.