In a mixing bowl, combine the heavy cream, whole milk, granulated sugar, and vanilla extract. Whisk until the sugar is fully dissolved.

Gently fold in the crushed Oreo cookies until evenly distributed.

Pour the mixture into a freezer-safe container and cover tightly. Freeze for at least 8 hours or until solid.

Remove the frozen mixture from the freezer and let it sit at room temperature for about 10 minutes.

Place the frozen mixture into the Ninja Creami bowl and select the 'Ice Cream' function.

Check the consistency after processing. If needed, process again until you achieve your desired creaminess.

Scoop the ice cream into bowls or cones and enjoy immediately.

Store leftovers in an airtight container in the freezer.