Indulgent Oreo Cookie Brownie Recipe

Indulgent Oreo Cookie Brownie Recipe

Disclosure: I may earn a small commission from the companies or products mentioned in this post.

To celebrate National Dessert Day on Friday I’ve decided to treat you with one of my favourite recipes. Hope you enjoy!



  • 140g butter (unsalted)
  • 280g caster sugar
  • 180g cocoa powder
  • 2tsp vanilla extract
  • 2 large eggs
  • 125g plain flower


  • 2 packs of Oreos

Cookie Dough:

  • 115g butter (unsalted)
  • 55g brown sugar
  • 165g caster sugar
  • 1 large egg
  • 1 1/4 tsp vanilla extract
  • 170g plain flour
  • 1tsp baking powder
  • 1 cup of chocolate chips


Brownie Recipe:

  • Melt all of the butter in a pan
  • Mix the sugar and cocoa powder in with the melted butter
  • Take off the heat
  • Add the beaten eggs and vanilla extract
  • Sieve in the flour gradually and mix
  • Leave to one side

Cookie Recipe:

  • EITHER mix butter, both sugars, egg, flour, baking powder and vanilla extract in a food processor
  • OR cream together the butter (should be at room temp.) and both types of sugar
  • Mix in the beaten egg and vanilla extract
  • Sieve in flour and baking powder and mix
  • For both ways: Fold in the chocolate chips


  • Line a baking tray with baking parchment
  • Fill bottom of the tray with cookie dough


  • Layer as many Oreos that will fit in a single layer (preferably more than this if you have them)


  • Pour the brownie mixture on top


  • Bake at 180 degrees C for around 30 minutes (or until a knife comes out clean)
  • Either enjoy them whilst still warm for a softer melted texture or leave them in the fridge for a few hours for more of a crunch – the batch below was left in the fridge overnight


Optional additions

  • 5 minutes before the brownies are done baking, cover them with marshmallows – however if adding marshmallows it’s best to eat whilst still warm
  • Add anything else you want! I’ve seen this recipe done with all sorts of additions such as caramel, peanut butter, marshmallow fluff and even creme eggs


Cheat tip

  • If you want to try these but don’t fancy cooking the brownie mixture and cookie dough from scratch, just cheat and use ready made mix from a shop!
  • Just make sure you check baking times on the packaging – for this one below the brownies needed cooking for longer so we half baked them first before adding the layer of Oreos and cookie mix on top


If you do try this recipe out please post photo’s below and let me know how it went! 🙂


London City Calling

Emily is a born and raised London girl, starting life in the north of the capital then moving down to Fulham in the southwest. She has a master’s degree in Social and Cultural Anthropology from University College London and now works full-time running this blog and as a freelance travel writer, splitting her life between London and travelling the world as a digital nomad.

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