Creating The Best Fudgy Chewy Brownies (Brookies) is straightforward when you follow these steps:

1. Preheat the Oven: Set your oven to 350°F (175°C) and grease a 9×13 inch baking pan or line it with parchment paper.
2. Mix Wet Ingredients: In a large bowl, combine the melted butter and granulated sugar. Mix until well-combined.
3. Add Eggs and Vanilla: Add the eggs one at a time, mixing well after each addition. Stir in the vanilla extract until fully incorporated.
4. Combine Dry Ingredients: In a separate bowl, whisk together the flour, cocoa powder, baking powder, and salt.
5. Stir Dry and Wet Mixtures: Gradually add the dry mixture to the wet mixture, stirring until just combined. Be careful not to overmix.
6. Add Chocolate Chips: Fold in the chocolate chips, reserving a few for topping if desired.
7. Spread Batter into Pan: Pour the brownie batter into the prepared baking pan, spreading it evenly.
8. Add Cookie Dough: Place small dollops of cookie dough across the brownie batter, pressing them slightly into the mixture. You can add more chocolate chips on top if you like.
9. Bake: Place the pan in the preheated oven and bake for 25-30 minutes. A toothpick inserted into the center should come out with a few moist crumbs.
10. Cool: Remove from the oven and let the brownies cool in the pan for about 10-15 minutes before cutting them into squares.

By following these clear steps, you will create fudgy, chewy brookies that are not only delicious but also visually appealing!