Wash the squash, trim the ends with a sharp knife, and cut off any blemishes. Coarsely grate with a handheld or box grater. Spray an 8x4" with cooking spray; line the bottom with parchment paper. Preheat your oven to 350°.

In a large bowl, whisk together the sugar, oil, eggs, vanilla, and grated squash.

Whisk the flour, baking powder, soda, salt, cinnamon, and nutmeg in a medium bowl. Dump into the large mixing bowl and stir together gently just until there are no flour streaks.

Pour batter into the prepared loaf pan. Bake at 350 degrees for 30 minutes. Turn the oven temperature down to 325 degrees, and bake for another 25 minutes, or until a toothpick inserted in the middle comes out clean.

Let the bread cool in the pan for 5-10 minutes, then turn out onto a wire rack to cool completely.