This is the recipe i used...
1 cup milk
1/2 cup granulated sugar
3 tablespoons all-purpose flour or cornstarch
1/8 teaspoon salt
2 egg yolks, slightly beaten
1 large banana, mashed
2 tablespoons lemon juice
(Mod edited to provide link.)
sorry, was hunting everywhere for an answer, but couldnt find one....
This is a cooked custard filling which does require refrigeration.
i did anyway just to be safe. phew.