Drain pineapple, reserving syrup. Add water to syrup to make two cups, heat to boiling. Add gelatin, stir to dissolve, Add pineapple, pour into 10x6x1-1/2 inch baking dish. Top immediately with marshmallows. Prepare dessert topping according to package directions. Spread over marshmallows just before serving.
Cajun Country -- New Iberia, Louisiana