Method:

• Step 1: Prepare the Crust
  In a mixing bowl, crush the 25 Oreo cookies into fine crumbs. You can use a food processor or place them in a zip-top bag and crush them with a rolling pin.
• Step 2: Add the Butter
  Pour in the 5 tablespoons of melted butter and mix until the crumbs are evenly coated and resemble wet sand.
• Step 3: Form the Crust
  Press the cookie mixture into the bottom and up the sides of a 9-inch pie dish. Make sure it's tightly packed for a sturdy crust. Place the crust in the refrigerator to chill while you prepare the filling.
• Step 4: Mix the Filling
  In a mixing bowl, combine the softened cream cheese and the Nutella. Use an electric mixer to beat them together until the mixture is smooth and creamy.
• Step 5: Fold in the Whipped Topping
  Gently fold in the thawed whipped topping until fully incorporated. This will give the filling a light and airy texture.
• Step 6: Assemble the Pie
  Remove the crust from the refrigerator and pour the Nutella filling into the crust. Spread it evenly using a spatula.
• Step 7: Chill
  Cover the pie with plastic wrap and place it in the refrigerator for at least 4 hours, or until set.