Place chocolate and cacao butter in a microwave-safe medium bowl. Run the microwave for 20 sec. Stir. Run it again for 20 more sec. Stir. Return it to the microwave and repeat until small lumps remain, remove and continue to stir to complete melting. Don’t set more that 20-seconds at the time to prevent scorching.
Cut circle from the sheet of sugar paper, same size of the mold cavities, and place them in the mold base (facing down).
Pour a tablespoon of melt chocolate over the paper until completely cover it. Place one oreo cookie on top, and finish to cover the cookie with more chocolate. Carefully, bang the mold over the counter to help to distribute the chocolate evenly.
Place the mold in the refrigerate to cool for 30 minutes. When the chocolate is set unmold the cookies and enjoy.