Preheat your waffle iron according to manufacturer's instructions. In a large bowl, whisk together the grated zucchini, eggs, milk, melted butter, and vanilla extract.
In a separate bowl, whisk together the flour, sugar, baking powder, salt, and cinnamon.
Gradually add the dry ingredients to the wet ingredients, stirring until just combined. Do not overmix.
Grease the waffle iron if necessary and pour about 0.5 cup of batter onto the hot waffle iron. Cook until golden brown and cooked through, usually 3-5 minutes.
Repeat with the remaining batter. Serve warm with your favorite toppings.
Notes
These zucchini waffles are delicious served with fresh berries, yogurt, or a drizzle of maple syrup.