Preheat oven to 350 degrees and spray a donut pan with baking spray
Using a small bowl, whisk the flour, ground nutmeg, sugar, baking powder and salt
In a large bowl, whisk the milk, egg, vanilla and oil until combined
Whisk in the dry ingredients until combined and smooth
Scoop the batter into the piping bag and fill the donut cavity ¾ way full
Bake in the oven for 12 minutes
Instantly remove from oven and turn the pan over onto a wire rack and allow to cool
Once donuts are cooled, pipe dollops of frosting all over the top half of the donut
Place two eyes in the top middle of the donut
Cut a chocolate chip cookie in half and place the half cookie in the bottom corner of the donut
where it looks like the cookie is in cookie monsters mouth
Allow the frosting to harden for 30 minutes before enjoying