Which type of sandwich consists of a single slice of bread with contents on top?

An open-face sandwich is characterized by having a single slice of bread with various toppings placed on top. This type of sandwich allows the ingredients to be visible and often consists of a variety of spreads, meats, cheeses, and vegetables arranged attractively over the bread. The concept of an open-face sandwich emphasizes the presentation and flavor combination of the toppings since the bread serves as a base rather than enclosing the fillings.

In contrast, other types of sandwiches, such as closed sandwiches, involve having two slices of bread that completely encase the fillings. A club sandwich typically features multiple layers of ingredients and is served with two slices of bread, making it distinct from the open-face style. Finger sandwiches are usually small and often have the edges trimmed off, and they are typically served cold and made with different fillings, but they still consist of two slices of bread.