Dorie’s Dieter’s Tartine

Name: Dorie's Dieter's Tartine
Ingredients: 1 large slice country bread; 1/2 cup nonfat fromage blanc or nonfat cottage cheese thinned with nonfat sour cream; Salt and freshly ground white pepper; 1/3 seedless cucumber (peeled and diced); 1 small tomato (preferably peeled and seeded, diced); Chopped fresh chives; Herbes de Provence (optional)