Preheat your oven to 350°F (175°C). Lightly grease a 9x5 inch loaf pan or a 12-cup muffin tin with butter or cooking spray.
In a large mixing bowl, combine the almond flour, salt, and baking soda. If you're making a sweet bread, stir in the cinnamon and sugar-free sweetener now. For a savory version, simply skip the cinnamon and sweetener.
Prepare your zucchini: Use a box grater to shred the zucchini. Then, place the shredded zucchini in a clean kitchen towel and squeeze out as much excess liquid as you possibly can. This step is crucial for perfectly moist, not watery, bread. Discard the liquid.
Add the squeezed zucchini, beaten eggs, and melted butter to the dry ingredients in your bowl. Stir everything gently until just combined. Be careful not to overmix!
For a Loaf: Pour the batter into your prepared loaf pan. Bake for 45-60 minutes, or until a toothpick inserted into the center comes out clean.
For Muffins: Divide the batter evenly among the 12 cups of your muffin tin. Bake for about 18-20 minutes, or until a toothpick inserted into a muffin comes out clean.
Let your delicious bread or muffins cool completely in the pan before slicing and serving. Enjoy your healthy, low-carb treat!