Mini Heart Oreo Cookie Mold Make your own chocolate covered Bite Size Oreos with the 6 Cavity Mini Heart Cookie Mold. Simply fill the mold cavities 1/3 full with melted chocolate, embed your sandwich cookies, then top off each cavity with chocolate. After chilling the molds in the fridge or freezer for a few minutes, your professional quality chocolate covered Oreos are ready to unmold and enjoy.