Beat the cream cheese in a large bowl until smooth. Add the crushed Nutter Butter cookies and mix until fully combined.
Scoop the mixture into 1-tablespoon portions and roll into balls. Place on a parchment-lined baking sheet.
Refrigerate for at least 1 hour, or until firm.
Melt the white melting wafers according to the package directions. Stir in purple oil-based candy coloring until the chocolate reaches a grape jelly shade.
Using a fork, dip each truffle into the melted chocolate, coating completely. Gently tap off any excess coating.
Return the truffles to the parchment-lined baking sheet and immediately top with the grape jelly sprinkles.
Refrigerate until the coating is set. Store in the refrigerator until ready to serve.