Casseroles are easy to prepare and not only favored by working people. Make the casserole ahead, cover and keep in the refrigerator. Just reheat in the oven or under the broiler before serving. There are also a good and tastily option to use up your meat or vegetable leftovers. You can easily double or triple the recipes if you are planning on a party with several people. In this case its best to use a large rimmed baking sheet or a broiler pan. Most of the vegetable casseroles, potato casseroles and pasta casseroles are made with meat. Prepare pans only with scalloped vegetables as well as pans with scalloped meat, so your guests can choose between vegetarian or meat. Vegetable casseroles are low in calories and appropriate to a diet. Also they are very healthy as prepared with fresh seasonal vegetables.