Cookie
Preheat your oven to 350°F (175°C).
To make the brownie layer, Mix together the melted butter, granulated sugar until well combined.
Add the eggs and vanilla. Mix until light and fluffy.
Stir in the cocoa powder, flour, and salt until just combined. Be careful not to overmix.
Chill until cookie dough is ready.
For the Cookie dough; combine melted butter, brown sugar, egg and vanilla. Mix until well combined.
Whisk together the flour, baking soda, and salt. Mixing until a cookie dough forms. Fold in the chocolate chips and dark chocolate chips, if using.
Scoop the cookie dough and press the chocolate chip cookie dough evenly into the bottom of the prepared baking pan.
Scoop a portion of the brownie batter over the cookie dough layer in the baking pan, spreading it evenly.
Bake in the preheated oven for about 12-15 minutes.
Allow the brookies to cool completely in the pan.
