Add all 36 Oreos to a food processor or blender. Pulse until they are fine crumbs. Use a spoon to stir everything up if needed.

Cut the cream cheese into several pieces and add to the Oreo crumbs. Pulse until a soft mixture forms.

Use hands or a cookie scoop to shape the mixture into 1-inch balls. Freeze on a baking sheet until hardened, at least 30 minutes.

Melt chocolate in microwave in 30-second increments, stirring each time, until smooth. Thin with shortening if necessary.

Dip each Oreo ball in chocolate using a fork or toothpick. Place on prepared baking sheet. Freeze or refrigerate until firm.

Decorate with drizzled chocolate or sprinkles if desired. Store in the refrigerator.