Preheat oven to 350°F.

Grate zucchini on the course side of a box grater.

Combine 2 cups grated zucchini, ricotta, egg, garlic powder, basil, parmesan, and breadcrumbs in a large bowl; mix well.

Season with salt and pepper, if desired.

Coat a baking sheet with nonstick cooking spray.

Form into balls, about the size of a walnut.

Place zucchini balls on prepared tray.

Bake for 15 minutes.

Serve as is or with marinara.