• 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.
• In a stand mixer bowl, cream the softened butter, brown sugar, and granulated sugar until light and creamy.
• Add in the egg, the vanilla, and cake batter extract if using, and mix again until combined. Scrape the bowl when needed.
• Add in the dry mixture and mix until the dry mixture disappears. Then using a large cookie scoop, scoop out 8 equally sized cookie dough balls, flatten to about 1 inch in thickness, and freeze for 15 minutes.
• Bake the cookies for 11 minutes. Let the cookies cool down fully on the baking sheet.

Make the buttercream frosting

• Cream the butter, and cream cheese together until creamy.

  Add in the powdered sugar, and vanilla and whip on medium speed until light and fluffy. This takes a few minutes.
• Frost your cookies with a large piping tip making swirls on top then top each cookie with the Oreo cookie dough bites, and the rainbow sprinkles.

Oreo cookie dough bites

• In a food processor blend the 4 Oreos until finely crushed. Mix in the cream cheese until well combined. make small bits of the Oreo cookie dough bites and top each cookie with that before adding sprinkles.