Add the unsalted butter and sugars to a bowl and beat until creamy.
Add in the egg, and beat again. If using vanilla, add it in now!
Add in the plain flour, finely crushed oreo crumbs (leave the creme middle in the oreo when crushing, I use a food processor to get a fine crumb) baking powder, bicarbonate of soda, and salt and beat until a cookie dough is formed!
Add in the chocolate chips, and chopped oreos and beat until they're distributed well!
Weigh your cookies out into eight cookie dough balls - they're about 125-130g each!
Once they're rolled into balls, put your cookie dough in the freezer for at least 30 minutes, or in the fridge for an hour or so!
Whilst the cookie dough is chilling, preheat your oven to 180C Fan, or 200C regular! If your oven runs hot, go for 160C-170c.
Take your cookies out of the freezer/fridge and put onto a lined baking tray. I put four cookies per tray!
Bake the cookies in the oven for 12-14 minutes - Once baked, leave them to cool on the tray for at least 30 minutes, as they will continue to bake whilst cooling!
These are best eaten on the day of baking, but can be revived by microwaving for 15-30 seconds, or putting into a hot oven for 2-3 minutes!
You can freeze the raw cookie dough easily, and bake from frozen if you don't want to bake the entire batch!
Once baked, these will last for 4-5+ days!
You can use any chocolate you fancy, I just love the combination of white and dark chocolate with the oreo chunks!
You can use chocolate bars chopped up instead of chocolate chips, just make sure the chunks aren't too big!