If you need something to take to the game or for a picnic, this is an excellent choice. These sandwiches warm you up on a chilly day and are perfectly savory and satisfying during the colder months.
Then, place a sliced of buttered bread in the pan, buttered side down. Top with the warm meatloaf, extra sauce (if using), pickles, French fried onions, another slice of cheese, and the final piece of bread.