I used a nice white chocolate from my local baking supply store. These were kind of difficult to dip. . .so I ended up using a shallow bowl and putting the oreo in the bowl, then using a spoon to cover it with white chocolate the using a butter knife to scoop it up and scrape the excess off the bottom and transferring it to the parchment paper for decorating. I have no idea how folks only roll the edges in sprinkles. My baking supply store actually has a mold specifically for oreos and I will definitely be purchasing one LOL!