PREHEAT grill to medium or preheat oven to 450˚F. For each s'more, top one graham cracker square with one chocolate bar half, one marshmallow and another graham cracker square. Repeat with remaining graham crackers, chocolate and marshmallows.
CENTRE s'mores individually on each sheet of ALCAN® Non-Stick Baking Foil with the non-stick (dull) side toward food.
BRING up foil sides. Double fold top and ends to seal packet, leaving room for heat circulation inside. Repeat to make four packets.
GRILL 4-5 minutes in covered grill.
OR BAKE 4-5 minutes on a cookie sheet in oven.