Using a medium saucepan, mix together 4.6 oz vanilla pudding mix, 3 oz strawberry gelatin, and 3 cups water. Bring to a boil over medium heat, stirring until dissolved.(Because you need to heat the pudding and the gelatin, you should use a cook and serve pudding mix. Do NOT use instant pudding for this recipe.)
Remove from heat and transfer to a mixing bowl. When cool, cover and refrigerate for 6-8 hours (or overnight).
Second Part
Prepare the ingredients by slicing 2 cups fresh strawberries into small pieces. If desired, dice 1 large banana.
Beat the refrigerated gelatin mixture until creamy. Stir in 1/3 cup strawberry jam, along with 20 oz crushed pineapple (drained) and the prepared strawberries and banana.
Fold in 8 oz frozen whipped topping and 6 oz miniature marshmallows (up to 8 oz) with a rubber spatula.
Cover and refrigerate for at least two hours before serving to allow the ingredients to meld together. This recipe will serve 10-12 people.
Refrigerate any leftovers. You may store this salad for 5-6 days.
Notes
* The addition of a sliced banana gives this salad a bit more flavor. However, this salad makes a large batch, and the added banana will not keep for more than 48 hours. If you will be using leftovers for longer than this, I do not recommend adding the banana to it.