Pre-heat oven to 350 degrees.
Grease a cast iron or stainless muffin tin with butter or coconut oil, or line muffin tins with non-toxic muffin papers.
Melt butter or coconut oil and set aside to cool.
Mix all dry ingredients together: oats, gluten free-flour (or almond flour), cocoa powder, salt, baking soda, baking powder, cinnamon, ginger, nutmeg, cloves.
Blend together the zucchini, spinach, banana, maple syrup, and yogurt. I do this in two batches in the Nutribullet.
Mix your blended green liquid with your eggs, vanilla, and melted butter, until well blended. I do this in our stand mixer.
Gradually add the dry mix to the wet, and mix thoroughly.
Hand mix in chocolate chips.
Evenly distribute batter to 24 muffin cups.
Bake at 350 for 15-20 minutes, you know they are done when a toothpick comes out clean- or only with melted chocolate!