Preheat oven to 375 degrees and line a cookie sheet with parchment paper.
Cream the butter and brown sugar together in a mixing bowl.
Add in the vanilla extract and eggs, mixing well.
In a separate bowl, whisk together the flour, cocoa powder, salt, and baking soda.
Stir dry mixture into the butter mixture and mix until combined.
Fold in the chocolate chips.
Drop onto the prepared cookie sheet using a scoop, about 1 inch apart.
Bake in oven for about 9-10 minutes, ensuring they dont overbake.
Remove from oven and allow to cool on pan for a few minutes before removing to a cooling rack.
Serve and enjoy!