In a large mixing bowl melt butter and chocolate chips in microwave for 30 seconds. Stir and melt for 30 seconds more. Stir until butter is fully melted
In a smaller bowl combine flour, brown sugar, white sugar, cocoa powder and salt. Mix to combine.
Mix eggs and vanilla to butter and chocolate mixture until thoroughly combined.
Hand stir dry ingredients into wet ingredients until fully combined.
Spread about ⅔ brownie batter into a 9x9in or 8x8in parchment lined pan and reserve the remaining brownie mixture.
Cream Cheese Mixture Topping
In a separate bowl mix together softened cream cheese with egg and sugar until smooth.
Spread mixture on top of brownie batter in 9x9in pan. Then dolloping remaining brownie mixture on top of cream cheese mixture.
With a knife swirl brownie dollops into cream cheese mixture and top with broken Oreo Cookies
Bake at 350F Degrees for 30-35 minutes or until toothpick in center comes out clean
Allow to cool in pan for 5 mins before lifting brownies out using parchment paper and allow to fully cool for 30 minutes before slicing.
Store in sealed container. Refrigerate after serving
Notes
Substitutions:
Milk Chocolate Chips for Semisweet Chocolate Chips
Baking Cocoa Powder for Dutch Process Cocoa
Adding an extra egg will result in cake-like brownies