
Start by placing the Oreo cookies in a removable-bottom baking pan lined with parchment paper.
In a large saucepan add the egg yolks, the sugar, the juice of one lemon and mix everything very well until the yolks are fully dissolved.
Add the milk, the cornstarch and mix to combine.
Next, turn on the heat to medium-low and continue stirring until it becomes a smooth and even cream.
Add the butter, the white chocolate and stir until the chocolate and butter melt.
Next, pour this cream over the cookies in the pan and spread it evenly.
Place it in the refrigerator and let it chill for at least 2 hours.
After this time has passed, remove the dessert from the pan and decorate it with chocolate sprinkles to taste.
Serve.