Preheat your oven to 350°F (175°C) and line a muffin tin with paper liners.
In a mixing bowl, combine the grated zucchini and sugar.
Add the vegetable oil and eggs, mixing well until combined.
In another bowl, whisk together the flour, baking powder, baking soda, cinnamon, and salt.
Gradually add the dry ingredients to the wet ingredients, stirring until just combined.
If desired, fold in chocolate chips or nuts for added flavor.
Spoon the batter into the prepared muffin tin, filling each cup about 2/3 full.
Bake for 20-25 minutes or until a toothpick inserted in the center comes out clean.
Let the muffins cool in the pan for 5 minutes before transferring to a wire rack.
Enjoy warm or at room temperature!