Rinse and pat dry the apples with a clean kitchen towel. 

Place the apples onto a flat surface and use a sharp knife to make ⅓-inch thick slices. Lay the apple slices flat and sprinkle half with the chocolate caramel pieces.

Toast the marshmallows over an open flame or broil them on a baking sheet until they reach your preferred level of "toasted". 

Place a marshmallow over the candy pieces and gently press a plain apple slice on top.