1. Preheat oven to 350F. Line a baking sheet with parchment paper. Set aside.

2. Brown the butter for the cookie dough. In a small saucepan, add the butter. Cook over medium-low heat on the stovetop, stirring frequently, until the butter is a golden brown color. Remove and set aside. Pour into a separate measuring cup or bowl and allow to cool while you make the brownie batter.

3. Make the brownie batter. Add the melted butter and cocoa powder and whisk to combine. Add in the sugar and eggs and stir to combine. Add in the sifted flour and salt and stir, just until combined. Fold in the chocolate chips. Place in refrigerator while you make the chocolate chip cookie dough.

4. Make the chocolate chip cookie dough. In a large bowl, add the cooled brown butter, sugars, egg and vanilla extract. Whisk to combine. Add in the sifted flour and baking soda and stir just until combined. Fold in the chocolate chips.

5. To assemble, scoop a ½ tablespoon chocolate chip cookie dough. Flatten the cookie dough. Add a 1 tablespoon scoop of the brownie batter on top, then place a ½ tablespoon chocolate chip cookie dough on top of the brownie batter. Press down to slightly flatten the cookie together. Place on prepared baking sheet. Repeat with remaining cookie dough.

6. Bake in preheated oven 10 minutes. Place a few chocolate chips on top of the cookie, lightly pressing into the cookie as soon as it comes out of the oven.

7. Allow to cool 5 minutes on baking sheet, then transfer to a wire cooling rack to finish coolling. Serve and enjoy!