Stir together - 2 packages lemon jello, 1 cup boiling water, 3 cups 7-Up
Add - 1 can crushed pineapple, drained (save the juice); 2 cups marshmallows; 2 sliced bananas.
Place in refrigerator until set. Meanwhile, in a small saucepan cook the following over low heat until thick and slightly boiling - 1/2 cup sugar, 1 cup reserved pineapple juice, 2 Tbsp. cornstarch, 1 slightly beaten egg, 1 Tbsp. butter. LET COOL and fold in one cup whipped topping. Spread over jello.
