Sorry but after a beef and vegetable stew, no way can you add a heavy pudding.
Beef and veg; stew gives a 'brown' main meal so dessert or starter has to be colourful.
I suggest a fresh fruit salad (use vanilla seeds to flavour) as a dessert or roasted garlic tomatoes or stuffed red and yellow peppers for a starter.
If you want recipes I can suggest some.
Does he have to actually cook this meal? I would have thought he would not have enough time to cook a stew within an exam, or can he start it before hand?