Preheat the oven to 350 degrees. Spray the inside of a loaf pan with avocado oil spray in a large bowl.
Mix together your wet ingredients. Start by adding your eggs, sugar, and vanilla. Whisk until smooth.
Add the melted butter and shredded zucchini, and set aside. In another bowl, mix together your dry ingredients, flour, baking powder, salt, and cinnamon. Using a fork, whisk together until smooth.
Next, slowly pour your dry ingredients into your wet ingredients, using a spatula to fold the mixture until all lumps are smooth and the mixture is evenly combined.
Pour the mixture into your loaf pan and place it in the oven for 25 to 30 minutes, or until a knife comes out clean when inserted.
While the zucchini bread is baking, mix together the softened butter and maple syrup and set aside.
When the zucchini bread is done baking, let it rest for five to 10 minutes. Using a knife, slice it into thick slices and serve with maple butter. Enjoy!