Eli Zabar, owner of The Vinegar Factory in New York City, believes that with only a few fresh ingredients, you can achieve a full-flavored sandwich. This is one of Eli's favorite recipes.
Toast the bread rounds in a toaster oven.
Place cheddar cheese on top of bread rounds. Toast them in oven until cheese has melted.
Top cheese with tomato slices. Season with salt and pepper to taste.