1Heat oven to 350. Lightly spray 2 loaf pans w/ cooking spray. In lg bowl, cream together butter, oil, sugar, vanilla, buttermilk and eggs. Add flours, baking soda, cinnamon and baking cocoa. Mix well. Fold in zucchinni. Pour batter evenly into pans. Sprinkle evenly w/ chocolate chips. Bake 1 hr, or until a tootpick inserted in center comes out clean.