Preheat oven to 350 degrees
Grease a bread loaf pan or line with parchment paper
Shred zucchini finely
Place shredded zucchini in kitchen towel and squeeze all the moisture out of it
Process eggs, Stevia, coconut flour, oil, and banana together in food processor
Stir cocoa powder, cinnamon, nutmeg, salt, baking soda, and zucchini into mixture until the batter is smooth
Pour batter into loaf pan
Bake for 45-50 minutes (or until a toothpick inserted into the center comes out clean)
Allow to cool
Remove from loaf pan and slice into 8 slices