Preheat oven to 350 degrees
Spray 9x5 loaf pan with cooking oil and set aside
Using a food processor or cheese grater, grate 1 large or 2 small zucchinis
Add grated zucchini to a large mixing bowl
Add sugar, brown sugar, applesauce, eggs, and vanilla to bowl with zucchini and stir to combine
In a separte mixing bowl, add flour, baking soda, baking powder, cinnamon, and salt and whisk together
Add dry ingredients to wet ingredents and stir to combine
Transfer batter to greased loaf pan and gently tap the bottom of the pan on the counter to release any air bubbles
Bake at 350 for 1 hour, until a toothpick stuck in the center comes out clean
Allow to cool in pan for 10 minutes
Transfer bread to a wire rack to cool completely before cutting to reduce crumbling
Store in airtight container in fridge for up to 1 week, freezer for up to 3 months
Serve as is or with a pat of butter and enjoy!