Crush Oreo cookies into very fine crumbs using a food processor or rolling pin.
Mix the crushed Oreos with melted butter until the mixture resembles wet sand.
Beat cream cheese, Nutella, powdered sugar, and vanilla extract until smooth and creamy.
Flatten a spoonful of Oreo mixture in your palm.
Add a small spoonful of Nutella filling in the center.
Wrap the Oreo mixture around the filling and roll into a small bite-sized ball.
Place the balls on a parchment-lined tray.
Chill in the freezer for 10–15 minutes until firm.
Dip or drizzle each bite with melted chocolate.
Sprinkle crushed Oreos on top before the chocolate sets.
Let the chocolate coating firm up before serving.