In a large mixing bowl, combine 30 crushed Oreo cookies, 8 ounces of softened cream cheese, and 1 teaspoon of vanilla extract. Blend until smooth, about 2-3 minutes.

Scoop out 1 tablespoon of the Oreo mixture and roll it into a smooth ball. Place on a parchment-lined baking sheet, shaping into squares. Refrigerate for at least 2 hours.

In a microwave-safe bowl, combine 1 cup of light green melting wafers and 1 teaspoon of Crisco shortening. Microwave in 30-second intervals until melted and smooth, about 1-2 minutes.

Dip each chilled square into the melted green chocolate, shaking off excess. Place back onto the parchment-lined sheet.

While the chocolate is still slightly tacky, dip one side into black sprinkles and place two candy eyes on each square before the chocolate sets.

Using 1 ounce of melted dark chocolate, pipe facial features like a mouth and eyebrows onto each coated square.

Place the finished Oreo Balls back in the refrigerator for an additional 30 minutes to set fully.