Generously grease eight 5 oz custard cups with butter or cooking spray.
In a large mixing bowl, beat eggs until foamy, then stir in Soup Option, milk, and Seasoning Option. Once well mixed, stir in the Cheese Option. Set aside.
Melt the butter in a large non stick pan on medium heat. When hot, add the carrot, mushrooms, and Vegetable Option, cook until tender and all the liquid evaporates. Stir occasionally while it is cooking.
While the vegetables are cooking, preheat your oven to 200° C (400° F). Get out a large baking pan, one that will hold all the custard cups.
Add vegetable mixture to the soup mixture and stir together.
Divide mixture evenly in the custard cups.
Place the baking pan on the oven rack then place the cups in the baking pan. Pour boiling water in the pan to reach halfway up the sides of the cups.
Bake for 30 minutes or until a knife inserted in the center comes out clean. Remove from oven and let rest for 10 minutes.
Unmold onto a serving platter.
Serve and enjoy.