In a small saucepan over low heat, melt ½ cup of unsalted butter until fully liquid. Stir in 1 cup of semi-sweet chocolate chips until smooth. Remove from heat and let cool for 10 minutes.

In a large mixing bowl, combine ¾ cup of white sugar and ¾ cup of brown sugar, whisking thoroughly.

Add 2 large eggs, 1 teaspoon of vanilla extract, and ¼ teaspoon of salt to the sugar mixture. Beat until smooth, then fold in the cooled chocolate mixture.

Sift ½ cup of all-purpose flour and ⅓ cup of cocoa powder into the wet mixture. Fold gently until just combined.

Roughly chop 1 cup of Oreos and fold into the brownie batter until evenly distributed.

Preheat your oven to 350°F (175°C) and line an 8"x8" baking dish with parchment paper.

Pour the brownie batter into the prepared baking dish and spread evenly. Bake for approximately 30 minutes.

Let brownies cool in the pan for about 20 minutes. Lift out using the parchment overhang and slice into squares.