Preheat oven to 350 degrees.

Spray donut pan with cooking spray.

In a large bowl, stir together cocoa powder, sugar, brown sugar, zucchini, coconut flour, all purpose flour, baking powder, salt, and cinnamon.

Next, stir in vanilla, oil, and eggs. Stir until well combined.

Fill prepared donut pan slots two-thirds of the way full.

Bake for 13-15 minutes, or until tops start to brown. The tops will not be pretty, don't worry as when you flip them out of the pan, the other side will be beautiful.

Let cool completely before removing from pan.

Place semi-sweet chocolate chips in a microwave safe bowl. Heat in 30 second increments, stirring after each increment, until chocolate is smooth. Then, stir in coconut or vegetable oil.

Dip smooth side of donuts in chocolate and spread sprinkles over wet chocolate if desired.

Let chocolate top cool and harden at least 2 hours before transferring to air tight container for storing.