Preheat your oven to 350°F. Line a large baking sheet with parchment paper and set it aside. This will help prevent the cookies from sticking and ensure they bake evenly.

In a medium saucepan, melt the unsalted butter over medium heat. Let it bubble but be careful not to let it brown. Once melted, add the semi-sweet chocolate chips and unsweetened cocoa powder to the saucepan. Pour the hot butter over the chocolate mixture and set it aside for a few minutes. Stir until the mixture is smooth and well combined.

In a large mixing bowl or the bowl of a stand mixer, beat the eggs, granulated sugar, and brown sugar together on medium-high speed. Continue beating for about 5 minutes, or until the mixture is light and fluffy. This will help create the soft texture of the cookies.

Add the melted chocolate mixture and vanilla extract into the beaten egg and sugar mixture. Mix on low speed until everything is just combined.

Slowly add the all-purpose flour to the dough, mixing on low speed until the flour is fully incorporated. Be careful not to over-mix to keep the cookies soft and fudgy.

Use a spoon or cookie scoop to drop dough balls onto the prepared baking sheet. Make sure to leave about 2 inches of space between each dough ball. For a smoother top, roll the dough balls between your lightly oiled palms.

Bake the cookies in the preheated oven for 8-10 minutes, or until they are set but still slightly soft in the center. The tops should have a crackled appearance. Remove them from the oven and let them cool on the baking sheet for 5 minutes before transferring them to a wire rack to cool completely. Enjoy these fudgy chocolate brownie cookies with a glass of milk or as a sweet treat for your next Southern gathering.