2 hour time limit
Keep it simple. Somerhing like a fruit cobbler or ice cream. If your pastry skills are decent make a pie or tart.
My guess at four courses would be appetizer (or soup), salad, main dish and dessert. I am with pierino, icecream or semifreddo is a safe play. If you want to fancy it up, make a fruit popsicle, like strawberry balsamic, or pina colada, or peach and cream... Do you have a sense for what your "interviewer" might like, are they health-conscious, indulgent, etc? That would help us point you in a good direction...
Grilled peaches or pears with vanilla ice cream & whipped cream you can make sauce if you want to top it. Quick simple elegant. Good luck
Personally, I would offer cheese as the fourth course.
Phil's suggestion of grilled peaches is timely for this season. Pears are completely out of season.
Ok Pineapple then!
Yes a cheese board would make an excellent substitute. Include a good washed rind triple cream and a semis oft and maybe a crumbly cheedar.
I would totally take cheese course over any dessert! But what if the "interviewer" is expecting William to actually "make" something and he is being evaluated based on that?
As others have said, you really need to know your audience, so do some sleuthing. Some hiring managers would respect your opting for a cheese course which allows more time to shine on the other courses. Other hiring managers would want you to go for a dessert whether it's your strong suit or not.
My gut tells me they would like to get your honest effort on 4 courses since they didn't specify which 4 courses. So, to you, fourth course could be cheese.
I'd do research on their staff. Do they have a pastry chef? Do you know anyone who works for them?
I am a professional chef and have been a part of hundreds of these kinds of interviews. My advice is to really consider the current menu of the establishment you are cooking for. Cheese or sweet may or may not fit the profile of the place. Cook things that you actually think fit the dynamics and service style of the restaurant. Be thoughtful, organized, polite and timely. Most of all have fun, cooking for others should be a joy.
One of the easiest possible, and quickest desserts is Panna Cotta. Flavor it any way you like: espresso, Grand Marnier, etc. the refrigerator does the bulk of the work.
The best of luck with the test.
What kind of job is it? If it is a cooking job, yes, you will be expected to make a dessert. Unless you want to do mignardise, which is more detailed and difficult. And you should also do a starch and not a salad.
Four courses? Soup or Appetizer, Main Dish, starch/potatoes, dessert.