Cut butter into 1 inch slices and melt in a medium saucepan over medium heat. Remove from heat and pour into the bowl of a stand mixer. Allow the butter to cool while you prepare the dry ingredients. Alternatively, you can melt the butter in the microwave in 30 second intervals.
1 (227g) cup Unsalted butter
Using a food processor, blend 5 Oreos into fine crumbs. For the Oreo sugar, remove 1 tablespoon of the Oreo crumbs and combine with 1 tablespoon of granulated sugar and mix together. Place the remaining Oreo crumbs in a small bowl and set aside until you are ready to make the cookie dough. For the crushed Oreos, using a food processor or a large ziplock bag and rolling pin, blend Oreos until small and medium in size.
½ cup Oreo cookie crumbs, 6 Crushed Oreo cookie pieces, 1 tablespoon Granulated sugar, 1 tablespoon Oreo cookie crumbs
In a medium bowl, shift together the flour, cornstarch, and baking soda. Whisk in the kosher salt.
2 ¾ (344g) cups All purpose flour, 1 teaspoon Baking soda, 1 teaspoon Cornstarch, ¾ teaspoon Kosher salt
In the stand mixer bowl with the melted butter, beat the melted butter and both sugars with the paddle attachment on medium high until the mixture is thick, creamy, and resembles a paste like consistency. About 2 minutes. Stop and scrape the sides and bottom of the bowl after 1 minute.
1 (220g) cup Light brown sugar, ½ (100g) cup Granulated sugar
With the mixer on medium speed, add in the eggs one at a time mixing until fully combined. Add in the vanilla extract with the last egg.
2 large Eggs, 1 tablespoon Vanilla extract
With the mixer on low speed, add the flour mixture in 3 additions, mixing until just combined. After adding the last of the flour mixture, mix until you only see a few streaks. Remove the mixing bowl from the stand mixer and add in the white chocolate chips, Oreo crumbs, and crushed Oreos. Using a rubber spatula, fold everything together until just combined. Cover bowl with plastic wrap and refrigerate for 3 hours.
⅔ cup White chocolate chips
Line a plate with wax paper and set aside. Remove the chilled dough from the fridge and using a large cookie scoop, measure out 2.5 oz of dough per cookie. Lightly roll the dough into balls using the palms of your hands, they do not have to be perfect. Smooth out any cracks. Place the dough balls on the wax paper lined plate and place in the fridge uncovered to firm up, about 10 to 15 minutes while the oven preheats.
Line a large cookie sheet with parchment paper and set aside. Preheat the oven to 350 degrees F. Place 5 balls of dough onto the prepared baking sheet, about two inches apart. Leave the remaining dough balls in the fridge until ready to bake.
Bake the cookies for 12 – 14 minutes depending on the texture of cookie you like. 12 minutes will yield a soft, gooey cookie while 14 minutes will give you a firmer cookie (don't worry it will still be soft). Remove the cookies from the oven halfway through baking and firmly tap the baking sheet on a heatproof surface to deflate the cookies. Rotate the baking sheet and return cookies to the oven and continue to bake. The cookies are ready when they are a light golden brown on the edge but pale and slightly wet in the middle. The cookies are better when they are slightly underbaked and will harden as they cool.
Using a small bowl or biscuit cutter, scoot the cookies in a circular motion until perfectly round. Top the cookies with extra white chocolate chips, crushed Oreos, and Oreo sugar. Allow cookies to cool on the baking sheet for 5 minutes then carefully transfer to a cooling rack to cool completely. They will be very soft so be sure to allow them to cool completely. Enjoy!!