This recipe was typed on a large white index card and found in a large collection, date unknown. Recipe is typed below along with a scanned copy.

CHOCOLATE POPCORN SQUARES

1 7oz. jar marshmallow creme
1 12oz. pkg. chocolate pieces
1/4 c. light corn syrup
6 c. unsalted popped corn

Combine marshmallow creme, chocolate pieces and corn syrup in a saucepan. Cook over low heat until mixture is well blended. Pour over popcorn and mix well. Press into a buttered 9x9x2 inch pan. Cut into 1-inch squares.