In a small bowl, whisk together flour, cocoa powder, kosher salt, and baking soda. Set aside.
1 ¾ cups all-purpose flour, 2.5 tablespoons Dutch-processed cocoa powder, 1.5 teaspoons kosher salt, 1 teaspoon baking soda
Cream together melted butter and both sugars until smooth, about 3-4 minutes.
12 tablespoons unsalted butter, ¾ cup dark brown sugar, ¼ cup granulated sugar
Add vanilla and red food coloring, followed by the egg and egg yolk. Mix until smooth and well combined.
1 tablespoon vanilla extract, 1 teaspoon gel red food coloring, 1 large egg, 1 large egg yolk
Sift in the dry ingredients and gently mix until about halfway combined.
Fold in chocolate chips, chunks, and crushed Oreo pieces, reserving some for topping the cookies later.
¾ cup dark chocolate chunks, ¾ cup white chocolate chips, 16 Oreos
Using a large cookie scoop, portion the dough into 15-16 equal-sized scoops onto a parchment-lined baking sheet.
Chill the dough for at least 30 minutes while preheating the oven to 350°F.
Bake 5 cookies at a time, giving them plenty of space between each other, for 11-12 minutes. As soon as they come out of the oven, use a round cookie cutter or spatula to "scoot" them into perfect circles.
Top immediately with additional chocolate chips/chunks and Oreo pieces so they can melt slightly from the residual heat.Let cool on the baking sheet for about 5 minutes before transferring to a cooling rack to cool completely, then enjoy!
Store cookies in an airtight container at room temperature for up to 5 days. Place wax or parchment paper between layers to prevent the cookies from sticking to one another.