That's a tough one. By an open fire I assume you mean like when camping. Not on a stove in a home.
You can place meat, potatoes, carrots and onions in a piece of thick aluminum foil, seal it, and cook it over the fire to make a kind of beef stew-like meal. But that's only one course - the main course. The first course would be a soup or salad. You can cook the soup over the open fire but naturally not a salad. Does the first course have to be cooked over the open fire? If not - go with the salad.
For the 3rd course - dessert, you could slice apples, sprinkle them with sugar and cinnamon plus a little water and cook them in a skillet until the apple softens and the sugar mix caramelizes. Just don't burn it. Or you could core an apple, place a teaspoon of butter, a teaspoon of brown sugar and about 5 raisins in the hole of the apple, wrap in the heavy-duty foil and put them in the fire until the apple is tender. Be sure to put a little water in the foil with the apple to help steam it.
Hope that helps.