Preheat the oven to 350F then line a baking sheet with parchement paper and set aside.
In a food processor, grind the 10 Oreos until finely crushed. In a medium bowl, mix the crushed Oreos, flour, corn starch, cocoa powder, baking soda, baking powder, and salt then set aside.
10 oreo cookies, 1 & 1/4 cup flour, 1 tbsp corn starch, 1/4 cup black cocoa, 1/2 tsp baking soda, 1/4 tsp baking powder, 1/4 tsp salt
In a stand mixer bowl, cream the softened butter, brown sugar, and granulated sugar until light and creamy.
1/2 cup butter, 1/4 cup granulated sugar, 1/2 cup brown sugar
Add in the egg and the vanilla and mix again until combined. Scrape the bowl when needed.
1 large egg, 1 tsp vanilla extract
Add in the dry mixture and mix until the dry mixture disappears. Then using a large cookie scoop( about 1/4 cup scoop), scoop out 8 equally sized cookie dough balls, flatten to about 1 inch in thickness, and bake in the preheated oven for 10 minutes
As soon as the cookies come out of the oven make an indentation in the center using a 1/3 cup measuring cup to give the cookies the shape of a pie crust. Allow them to cool down fully.