In a bowl toss the orange slices gently with the mint, olive oil, garlic, coriander, cayenne (if using), sugar, and salt to taste.
Cut sliced country-style bread into 3/4-inch cubes and bake in a preheated 350 degree oven for 7 to 10 minutes or until they are just crisp.
Line the bottom of a platter with the arugula. Arrange the oranges on top, overlapping the slices. Sprinkle the olives over the oranges, and serve each portion topped with one-fourth of the croutons.
Recipe courtesy of Gourmet Magazine