Sift the flour, Dutch-processed cocoa powder, and baking powder over a large bowl. Mix these ingredients in the bowl.
Add the salt, monk fruit, unsweetened applesauce, milk, vanilla extract, and egg to the large bowl. Thoroughly combine all of the ingredients, making sure not to overmix.
Transfer the batter to the inside of a Ziploc bag or piping bag. If you use a Ziploc bag, snip the corner edge off the bag so you can pipe the donuts.
Lightly spray an oven-safe non-stick donut pan with oil. Squeeze the piping bag and form six donuts.
Bake the donuts at 350℉ for 11-13 minutes.
Let the donuts cool in the pan for 5-10 minutes. Then, carefully remove them from the pan and place them on a wire rack to cool further.
While the donuts are cooling, make the glaze. To make the glaze, combine the powdered monk fruit sweetener, milk, and vanilla extract.
Place the Oreos in a small Ziploc bag. Seal the bag and crush the Oreo cookies with the bottom of a cup or a rolling pin.
Once the donuts have cooled, drizzle the glaze over them. Then, add the crushed Oreos on top, and enjoy!