Line a sheet pan with parchment paper and set aside.

Place your butter in a small saucepan and melt over medium heat.

Add in the marshmallows to the saucepan with butter. Keep stirring until they are all melted.

Remove the pot from the stove and stir in the crushed Oreos until well combined.

Spoon heaping tablespoons of the batter onto the sheet pan lined with parchment paper.

Allow the coal to cool completely.

Store in an airtight container for 2-3 days.