Preheat oven to 325 degrees F. Line the bottom of two 8x4'' bread pans a piece of parchment paper, and spray the pans lightly with cooking spray.

In a large bowl mix the granulated sugar, brown sugar and oil until well combined. Add the eggs and vanilla and mix to combine.

Grate the entire zucchini (peel on) on the large holes of a box grater, using light pressure. Use a paper towel to gently squeeze some of the moisture out, then lightly measure it into measuring cups (don't pack down).

In a separate bowl mix together the dry ingredients. Add the dry ingredients to the bowl with the wet ingredients and stir to combine.

Pour batter into prepared pans. Bake at 325 degrees F for 50 minutes to 60 minutes or until a toothpick inserted in the center of the loaf comes out clean. (If the loaves are browning too much on top during baking, tent a piece of foil over top until they're finished baking).

Cool in pan for 10 minutes before removing to a wire cooling rack to cool completely.