Line a loaf pan with parchment paper.
In a large bowl, mix the nut butter, coconut milk, melted coconut oil, and vanilla extract until smooth.
Stir in the chocolate chips and crushed graham crackers.
Pour the mixture into the prepared loaf pan.
Dollop the marshmallow crème on top and swirl with a knife or toothpick.
Top with additional crushed graham crackers and chocolate chips.
Chill in the fridge or freezer for at least 30 minutes until firm.
Cut into squares and enjoy!