Preparing Fudgy Chewy Brookies is easy when you follow these steps:

1. Preheat the Oven: Preheat your oven to 350°F (175°C). Line a 9×13 inch baking dish with parchment paper.

2. Make the Brownie Layer:
– In a large bowl, mix together cocoa powder, granulated sugar, brown sugar, and melted butter until smooth.
– Add in the eggs and vanilla extract, mixing well.
– Stir in flour and salt until just combined. Optionally, fold in chocolate chips.

3. Spread the Brownie Batter: Pour the brownie batter into the prepared baking dish, using a spatula to spread it evenly across the bottom.

4. Make the Cookie Layer:
– In a separate bowl, whisk together flour, baking soda, and salt.
– In another bowl, cream together softened butter, granulated sugar, and brown sugar until light and fluffy.
– Add the egg and vanilla extract, mixing until fully incorporated.
– Gradually add the dry ingredients, mixing until just combined. Stir in chocolate chips.

5. Layer the Cookie Batter: Carefully spoon the cookie dough on top of the brownie layer, spreading it as evenly as possible.

6. Bake: Place the dish in the preheated oven and bake for 25-30 minutes, or until the edges are set and a toothpick inserted in the center comes out with a few moist crumbs.

7. Cool: Remove the brookies from the oven and let them cool in the baking dish for about 15 minutes. Then, lift them out using the parchment paper and allow them to cool completely on a wire rack.

8. Cut to Serve: Once cool, cut into squares and enjoy!