HEAT grill to medium-low heat.
PLACE 9 graham squares on bottom of 9-inch square disposable foil pan; top with chocolate, marshmallows, berries and bananas.
SPREAD remaining grahams with jam; place, jam-sides down, over grahams in pan to make 9 s'mores.
GRILL 4 to 6 min. or until marshmallows are puffed and chocolate is melted. Cool 5 min. before serving.