do not let it boil. Add the chocolate;
submerge it under the cream.
and let sit for a few minutes then whisk until smooth.
In the meantime while the chocolate is softening place the peanuts in the bottom of the crust.
Place the marshmallows over the peanuts
Pour the chocolate mixture over the nuts and marshmallows which will float to the top.
Push the marshmallows below the chocolate.
Refrigerate to set.
Release the tart. Cut into 10 to 12 pieces.