Melt chocolate and pour in the bottom of heart mold, then freeze for a few minutes
Mix peanut butter filling ingredients together until smooth, fold in crushed graham crackers
Press into the chocolate coated hearts
Spray a spoon with non stick spray, then add marshmallow fluff as the next layer, press down to even out
Top with remaining melted chocolate, and place in the fridge for 30 minutes
Remove from molds and enjoy!
Store in fridge or freezer