These thick chocolate chip cookie dough cookies are perfectly crisp on the outside with a chewy center. They're topped with a creamy cookie dough frosting and finished with a sprinkle of mini chocolate chips.
Line a baking sheet with parchment paper or a silicone baking mat.
In a stand mixer or a large bowl with a hand mixer, cream together butter and both sugars. Mix in egg and vanilla. Add flour, cornstarch, baking soda, and salt to the mixing bowl and mix until combined. Add mini chocolate chips and mix into the dough.
Place the cookie sheet in the refrigerator for 1 hour. Do not skip this step. This helps the cookies keep their mound shape while they bake. Prepare the frosting while the cookie mounds are in the fridge.
After 1 hour in the fridge, preheat the oven to 375°F. Bake in the oven for 12-14 minutes until the bottoms are browned and the tops are set. Let the cookies fully cool before frosting.
Whipped Cookie Dough Frosting
On a small baking sheet, spread flour into a thin layer. Bake at 350℉ for 5-10 minutes to kill any harmful bacteria. Let fully cool.
Cream together butter and brown sugar in a stand mixer with a whisk attachment.
Add powdered sugar, flour, vanilla, salt, and 1-2 tablespoons of milk until you reach the desired consistency. I personally prefer to chill the frosting in the fridge so that it's easy to scoop with a small 1-tablespoon cookie scoop on top of each cookie, if you choose to use one.
Add a dollop of frosting to each cookie. Sprinkle the top of the frosting with mini chocolate chips.