These can be made with or without a mold. Melt chocolate gently in a double boiler or microwave.
If using a mold, add sprinkles first and then a little chocolate. Chill.
Add Oreo and enough chocolate till fill in sides and top. Chill until set and unmold.
If you skip the mold, just dip and lay oreos on parchment. Add sprinkles and chill 5 mins until set.