Melt the candy wafers per the instructions on the bag. It makes it easier to dip the Oreo's if you melt them in a deeper glass container but a bowl will absolutely do.
With a fork, dip the Oreo into the white chocolate and tap slightly to get all of the excess candy to drip off.
Place on a foil lined baking sheet.
While chocolate is still warm, press a mini peanut butter cup to the side of the Oreo.
Quickly shake the sprinkles of your choice onto the Oreo.
Allow cookies to completely set before serving.
If there is a blob of white chocolate that you don't want on your cookie, take a thin paring knife and "carve" the blob off.
Do not refrigerate as sometimes this discolors the candy.