Place the Oreo cookies in a food processor and pulse until they become fine crumbs. If you don’t have a food processor, you can place the cookies in a sealed plastic bag and crush them with a rolling pin.
In a large mixing bowl, combine the Oreo crumbs, pumpkin puree, pumpkin pie spice, and cream cheese. Mix well until everything is fully incorporated, creating a soft, thick dough.
Scoop out about a tablespoon of the mixture and roll it into a ball using your hands. Place each ball on a parchment-lined baking sheet. Once all the balls are shaped, chill them in the fridge for 30 minutes to firm up.
Melt the white chocolate chips in a microwave-safe bowl, stirring every 30 seconds until smooth and completely melted. Add a teaspoon of vegetable oil or coconut oil to thin the chocolate if needed. Dip each chilled Oreo ball into the melted white chocolate, coating it completely. Place the coated balls back onto the parchment-lined sheet and let the chocolate set.