Preheat the oven to 350 degrees F (177 degrees C). Grease a 9-inch loaf pan with butter or nonstick cooking spray and set aside.
In a large mixing bowl, whisk together the eggs, milk, and olive oil.
In a separate bowl or large measuring cup, combine the flour, baking powder, baking soda, and salt.
Add the dry ingredients to the bowl with the wet ones. Stir with a rubber spatula until combined.
Fold in the cheddar cheese, followed by the grated zucchini, diced tomatoes, sliced green onions, chopped basil, and minced garlic. Stir with a rubber spatula until everything is incorporated throughout the batter. The batter will be sticky.
Pour or spoon the batter into the greased loaf pan. Sprinkle with the parmesan cheese.
Bake in the preheated oven for 50 to 60 minutes or until a toothpick inserted in the center comes out clean. If the toothpick hits a piece of cheese and comes out with melted cheese on it, try again in another spot to ensure that the bread is cooked through.
Let the bread cool for at least 20 minutes before taking it out of the loaf pan. Let it finish cooling on a cutting board or wire cooling rack.
Slice the bread into pieces. Enjoy!
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