Preheat oven to 350 degrees F. Spray a 9 x 5-inch loaf pan with nonstick cooking spray.
In a bowl whisk together the flour, baking powder, baking soda, sugar, and salt.
2 cups all-purpose flour, 2 tablespoons sugar, 1½ teaspoons baking powder, ½ teaspoon baking soda, ½ teaspoon salt
In a separate bowl, whisk together the buttermilk and egg. Once mixed, add the butter to the buttermilk mixture. Whisk until fully combined.
1 cup buttermilk, 1 large egg, ¼ cup butter
Add the buttermilk mixture to the flour mixture and mix until just combined. Do not overmix!
Mix in the shredded cheese, shredded zucchini, and chopped chives.
1½ cups extra-sharp cheddar cheese, 3 tablespoons fresh chives, 1½ cups shredded zucchini
Pour the batter into the prepared loaf pan and bake for one hour, or until a toothpick inserted into the center comes out clean.
Allow the bread to cool for at least 10 minutes before inverting over a cooling rack to remove from the loaf pan. Allow bread to cool for an additional 5 minutes before serving. Enjoy!