Preheat the oven to 350 F. In a large bowl, whisk together flour, sugar, cocoa powder, salt, and baking soda. Add in eggs, melted butter, and vanilla extract and mix until smooth.
Use a cookie scoop to drop brownie batter onto a large ungreased baking sheet at least 2-inches apart. Bake for 10-12 minutes.
Decorate the cookies with chocolate chips and Oreo cookie halves.