Gracie's 7up Lime Jello Salad

1 regular size pkg. lemon jello
1 regular size pkg. Lime jello
2 cups boiling water
Dissolve jello mixture well
Add 2 cups icy cold 7up
1 can very well drained crushed pineapple
reserve juice for topping
mix pineapple into jello mixture
pour into glass pyrex flat dish
cover top with minature marshmallows
cool until set
dissovle 1 level tlb. sugar in reserved juice add 11/2 tlb's corn starch cook until thickened, cool thoroughly, then mix in small carton on cool whip, and cover top of jello after it has set. Just before serving cover top with finely grated American Cheese. The cheese gives it zip and add flavor

THIS CAN BE MADE FOR DIABETICS
Use sugar free jello
sugar free 7up
crushed pineapple in it's own juice
and sweeten juice with equal
also use fat free cool whip
it almost taste the same.
A Summer's Delight Enjoy!