The Cookies and Cream Milkshake cookie is a delicious sugar cookie packed with Oreos and topped with delicious, creamy cookies and cream buttercream frosting.
Preheat oven to 350 degrees. Use parchment paper or a silpat mat to line a baking sheet.
Cream the butter and granulated sugar in a stand mixer (or by hand) until light and fluffy. Scrape the sides of the bowl to make sure all ingredients are blended.
Add in eggs and vanilla and beat until combined.
Add in flour, cornstarch, and baking powder. Mix until all combined.
Add chopped Oreos and mix dough for 5 seconds. Do not over mix or don't crush the Oreos.
Scoop out dough and roll into balls. Depending on the size of cookies you want, scoop out 1/4 cup dough for larger cookies or 2 TBSP dough for smaller cookies. Place dough balls on prepared pan (6 cookies to a pan) and flatten with your hand.
Bake at 350 degrees for 9-11 minutes.
Cool cookies cookie sheet for 10 minutes before removing to cooling rack.
Make the Cookies and Cream Frosting
In stand mixer, cream butter until smooth. Slowly add in powdered sugar, vanilla extract and heavy cream and blend until smooth and creamy.
Carefully STIR in chopped Oreo just enough that they are mixed in. You don't want to crush the Oreos and turn the frosting grey.
Spread the frosting on the cooled cookies and top with a Mini Oreo.
Chill the cookies. Serve chilled. Keep these cookies stored in an air-tight container in the refrigerator.