After you’ve separated the Oreo biscuits, you’ll be left with the white creme filling. Don’t let it go to waste! My top tip… add it to the espresso cream cheese filling. You could even use it to make your own cream cheese frosting. Perfect for cupcakes! If you really don’t want to separate the biscuit from the filling, you can throw the whole Oreo into the mix. It creates a less stable biscuit base in my opinion. Still, if time is short, throw the whole biscuit in.