Place Chocolate, Condensed Milk and Vanilla Bean Paste in slow cooker and cook on high for approximately 1 hour, stirring every 10-15 minutes.
While it’s cooking, place 7 bags worth of the Mini Oreos in a zip lock bag and crush roughly using a rolling pin.
Open the remaining 3 bags of Mini Oreos and separate them. Use a knife to gently remove the cream.
Stir in the Mini Marshmallows and cook for another 20-30 minutes, stirring frequently.
Allow the fudge mix to cool slightly and stir through the crushed Mini Oreos. Once the Mini Oreos are well combined, pour into a lined slice tray immediately.
Smooth out the top with a spatula and press the separated Mini Oreos into the top.
Refrigerate for several hours or until set.