Spread cream cheese on bread and top with tomato slices.
Sprinkle evenly with fleur de sel (and chives, if using).
Ingredient amounts: The exact amounts may vary slightly, depending on how large your slice of bread and tomatoes are.
Fleur de sel: For more information on fleur de sel, where to find it (including HERE on Amazon), and possible substitutions, refer to the post above. In general, other large-grained, flaky finishing salts will be acceptable substitutes. DO NOT substitute regular table salt or other fine-grained salts.