Preheat your oven to 350 degrees. Spray your muffin pans with pan release or butter and set aside.
In a small bowl, combine the all-purpose flour, whole wheat flour, baking powder, salt, cocoa powder, and granulated sugar.
In a medium-sized bowl, add the egg, canola oil, buttermilk, and vanilla. Mix well.
Then combine the wet and dry. Make sure you only mix to combine. You do not want to overmix these!
Spoon into your donut pans and move to the oven.
These will bake quickly. I have found 8 minutes is just about perfect. Do not overbake these. They will dry out quickly with the whole wheat flour.
Remove from the oven and allow them to cool for a few minutes in the pan.
Gently tip onto your wire rack and the donuts should fall out. You might have to bang it gently to get all of them to fall out.
While they are cooling, it is time for the ganache. Heat the heavy cream in the microwave for about 15-20 seconds, until it is very hot.
Pour over the chocolate chips and let this sit for about a minute. Then mix gently. If you need to, return the bowl to the microwave and heat for about 20-30 seconds. Mix and repeat if needed.
Dip each of your donuts one by one into the glaze, then return to the cooling rack.
That is it! They are done.
Now, sit back and enjoy. You deserve it!