Add Oreo cookies to a food processor and pulse until finely crushed.
In a mixing bowl, combine the Oreo crumbs, softened cream cheese, pumpkin puree, pumpkin pie spice, cinnamon, and nutmeg. Mix until well combined and smooth.
Use a cookie scoop or spoon to portion the mixture into 1-inch balls. Roll them smooth with your hands.
Place the rolled balls on a parchment-lined baking sheet and refrigerate for at least 30 minutes, until firm.
While the balls chill, melt white chocolate chips or orange candy melts using a microwave-safe bowl or double boiler, stirring until smooth.
Remove chilled balls from the fridge. Dip each one into the melted chocolate using a fork or dipping tool, tapping off excess.
Place dipped balls back on the parchment-lined sheet. Immediately add sprinkles, crushed Oreos, or insert a pretzel stick stem if desired.
Refrigerate again until the coating is fully set (about 10–15 minutes).
Store in an airtight container in the fridge for up to 5 days.