First, place 4 of the Oreos, the vanilla extract, and the sweetener into the Ninja Creami pint.
Then, fill with milk to the max fill line.
Place the lid on securely and then freeze for 24 hours.
After 24 hours, remove the lid and place the pint into the pint holder. Place the lid with the blade on top and lock into place.
Run the Ninja Creami on the lite ice cream function. You will need to respin twice for the best texture.
Next, create a hole in the ice cream and places the remaining Oreos in it and then select the "mix-in" function.
Optional top with additional crushed Oreos. Enjoy!