Step 1

Grease a 13" by 9" pan and line it with parchment paper cut so some hangs down on the long sides. You'll use this to lift the brownies out of the pan.

Step 2

Preheat the oven to 350 degrees.

Step 3

Beat together the oil, sugar, and vanilla.

Step 4

Add the flour, cocoa, baking soda, and salt and mix well. The batter will be very dry and look like sand. Don't panic.

Step 5

Fold in the zucchini by hand and let the batter rest for at least five minutes to give the zucchini time to release its moisture into the dry ingredients. It's almost magic.

Step 6

Add the chocolate chips and stir again. The batter should look wet now. If not, let it sit a little longer. It will happen.

Step 7

Spread the batter in the pan and bake for 25-35 minutes. Check after 25 minutes. A cake tester or toothpick should come out clean with no batter clinging to it. Every oven is different!

Step 8

Allow the brownies to cool completely before cutting them into squares.