This Oreo cake bySpice Biteson YouTube is unbelievable because it made with only 3 ingredients.
Plus, there is no baking required to make this cake.
I would add additional Oreo cookie crumbs on top.

Image by Spice Bites via YouTube
Pour the warm milk on top of the cookies and mix until a smooth chocolate consistency.
Add the baking powder and mix well.
Continue to watchSpice Biteson YouTube for full instructions and details.

Then, place the second layer on top.
Cut and remove the edges or if you prefer it to be round then leave as is.
I love chocolate so this is a cool way to make an Oreo chocolate cake with only 3 ingredients.

However, I would add the grated chocolate on top.
Its impressive how the cake was made on a pan, instead of the oven.
So, for those that do not have an oven, this is an alternative.