I used 9 inch round tin that was lined with parchment paper. Preheat oven to 185 C.
I used a mix of milk chocolate with dark chocolate as I didn't want too much dark chocolate in it.
This time I used my measuring scale and measured everything before making the brownie.
Once you measure the chocolate, take it in a microwave safe bowl and melt it in intervals of 1 min until it melts down completely.
Add butter and melt again for 30 secs. Using a spatula, whisk it well.
Next, add the sugar and condensed milk, Combine everything well.
Then you can add the flour, cocoa powder and the batter becomes thick.
You can add milk at this stage to make the batter loose and finally add the baking powder and gently mix in.
Break 2 to 3 Oreo biscuits and mix in the batter.
Finally, add the aerated water to get the right consistency.
Once the oven is ready, transfer the batter to the greased tin and place the remaining oreo cookies on top.
Once done, bake these brownies in a preheated oven at 185 C 35 minutes.
Let it rest until it cools down before slice it.