Place one package of OREO cookies into a food processor. Pulse into fine crumbs.
In a large bowl, combine cream cheese and cookie crumbs until white streaks are no longer visible.
Press a tablespoon into the silicone mold cavity, adding more or less as needed. Refrigerate for 1 hour or until firm.
Melt chocolate wafers according to package directions. Dip oreo balls into melted chocolate, shake off excess chocolate and place on a parchment-lined baking sheet. Add candy eye to the center-right side of the truffle. Refrigerate until the chocolate has set.
Melt black wafers and place them in a piping bag. Decorate with melted chocolate along the left and right sides to resemble the Hocus Pocus spell book.
Keep oreo ball truffles refrigerated until ready to serve.