I made vanilla pudding for one and is was still partially liquid the next day . What did I do wrong?

Lynette McWilliams

I haven't made this recipe, but I noticed that it used cornstarch instead of eggs to thicken it. Cornstarch is easier for many people to work with than flour, but I suspect you may need to either increase the cooking time once you add in the cornstarch or perhaps increase the cornstarch.