It depends on the food being made, and what the options are. Meat is generally cooked on a scale of “rare” to “medium” to “well-done”; eggs can be made in a number of ways (poached, scrambled, over easy, etc.); if I’m ordering a salad, someone might ask what kind of dressing I want.
I can’t think of a general question a vendor would ask that would apply to all kinds of food, such as, “How would you like your food made?” Instead, the cook would ask a specific question, such as:
- How would you like your meat cooked?
- How do you want your eggs?
- What kind of dressing do you want?
- What kind of bread do you want? [for a sandwich, or for toast]
- Do you want that dish deep fried, or sautéed?
- Do you want rice or beans with that?
- What do you want on your pizza?
Incidentally, my father likes his English muffins well-toasted. When he is eating breakfast at a restaurant, he’ll often tell the waiter, “Make sure those English muffins are well-done. I want them extra crisp.” So it is possible to use a term like “well done” with something toasted, but that’s an unusual case. And if he liked his English muffins lightly toasted, I don’t think he’d use the word “rare”.