Pre-heat oven to 180 deg C ( 350 deg F ) – line a 20 x 20 cm ( 8 inch ) baking pan with baking paper - I line the dish both ways and leave an overhang for easy removal after baking
Beat together the Butter, Brown Sugar, Caster Sugar, Peanut Butter and Vanilla
Add the Eggs one by one – beating well after each addition – add the Flour and Baking Powder whilst mixing on medium
Finally add in the Fresh Cream – beat until just combined
Spoon half of the batter into the baking pan – top with a layer of Oreo cookies – spoon the remaining batter over the Oreo cookies
Bake 40 – 50 minutes or until a tester comes out clean
Remove from the oven – leave to cool slightly and transfer to a wire rack to cool completely