Before baking, place the chocolate chips on top of the rolled-out dessert dough and press in gently. Sprinkle about one tablespoon of crumbs on top, or more to taste.

Bake at 450 degrees Fahrenheit on the bottom rack for six to eight minutes, or until chips are mostly melted. Remove from heat and place marshmallows on top, leaving about an inch between each one (they expand). Bake another five to eight minutes or until marshmallows are lightly toasted. Watch them carefully or they will get enormous and be too chewy to eat.