Preheat the Oven: Begin by preheating your oven to 350°F (175°C). Grease a loaf pan to ensure easy removal.
Prepare the Mixture: In a large bowl, combine the shredded zucchini, sliced green onions (if using), eggs, sour cream, and melted butter. Mix it all together until well combined.
Combine Dry Ingredients: In another bowl, whisk together the flour, baking powder, baking soda, and salt.
Mix Wet and Dry: Gradually add the dry ingredients to the wet mixture, stirring gently until just combined - don’t overmix!
Add Cheese: Gently fold in the shredded cheddar cheese, ensuring it’s evenly distributed.
Transfer to Pan: Pour the batter into the prepared loaf pan, smoothing out the top to create an even surface.
Bake: Place the pan in the oven and bake for 60-70 minutes, or until a toothpick inserted in the center comes out clean.
Cool and Slice: Allow the bread to cool for about 10 minutes in the pan, then transfer to a wire rack to cool completely. Once cooled, slice and enjoy!